nb Waiouru

Floor battens Completed

noreply@blogger.com (Tom and Jan) — Sun, 04 Mar 2012 09:18:46 PST

Last night the gas bottle ran out whilst Jan was in the middle of baking me an apple sponge pudding! Why does the gas bottle always empty at night….. Usually when it’s raining? As a consequence the sponge collapsed in the middle. Not that this will deter me from eating every last morsel. I was raised on my mother’s regularly failing puddings and other raw or burned offering. Actually I suspect she deliberately produced failures as part of her strategy to prepare me for army food!

Sometimes I smile at the irony of marrying a fantastic cook who can produce a magnificent meal from limited ingredients. AND then to her horror, I drown it in tomato sauce before swallowing it in such haste that the food scarcely touches the sides on the way down!

We woke the rain which turned to snow around midday. However the ground was too wet and warm for it to settle.

As for Waiouru. In the morning the floor battens were screwed down and there are two drill bits left from the original 10. This afternoon I cut fillets of timber and screwed them to the underside of the longitudinal battens adjacent to the side of the hull. They will provide support for the Kingspan. The cavity either side of the blackwater tank was also battened to support the Kingspan in that area. Some of the spray foam on the side of the hull just above the baseplate needs to be removed so the Kingspan can snuggly fit into the cavity. I made an unsuccessful attempt to remove it using a paint scraper. The job would have taken days using this method so I’ve had another think and decided to try removing it tomorrow using a razor knife and an old wood chisel.

Once this is done the baseplate can be given a final vacuum before installing the sheets of Kingspan.

At least I know what I’ll be doing tomorrow!

A small step

noreply@blogger.com (Tom and Jan) — Sat, 03 Mar 2012 09:33:23 PST

Installing the floor battens was today’s task. The first step was to cut to length the timber for the four longitudinal battens so the joins would meet on one of the steel cross members. This was a relatively simple job. The next step involved cutting all the cross battens that fit on top of the steel cross members. Initially the plan was to cut the battens inside Waiouru; however each cross batten requires a small length of “under frame”. More on this later! So in the end a jig was made and the cross members cut out and assembled in the workshop.

Before

After

Richard gave me 10 high speed steel drill bits and a large bag of wood screws. The timber is fixed to the steel cross members by first drill a hole through the timber and steel, then the timber is fixed to the steel with a wood screw. This isn’t the easiest task and I quickly realised why Richard had provided 10 drill bit. If the bits weren’t breaking, then the screw head would snap off. Nevertheless, by the end of the day the majority of the timber was screwed to the steel cross members.

Earlier, I mentioned a jig for the timber cross members. Kingspan insulated sheeting will be installed between the battens. A small timber fillet has been fitted to the underside of each timber cross member. This will support the Kingspan and prevent it falling into the bilge.

Initially these fillets were going to be fixed to the batten with wood screws. A quick calculation identified a significant number of screws would be required. There’s almost no weight in the Kingspan so I used Richard’s battery powered nail gun instead.

We have been able to salvage some of the original Kingspan.

This will be cut down to fit the new batten layout. If we are to achieve a thermal cocoon then the insulation will need to extend from under the floor to the side of the hull where it must seal with the spray foam.

My current thoughts on achieving this is to screw a fillet of timber under the outer longitudinally battens. This would support the thin lengths of Kingspan I’d used to fill in the gap. Hopefully these pieces of Kingspan will come from the offcuts. Any crevices and cracks will then be filled with spray foam. This can be purchased in an aerosol can.

Porthole Frames Completed

noreply@blogger.com (Tom and Jan) — Fri, 02 Mar 2012 09:37:14 PST

The last sheet of ordered plywood arrived which enabled me to mark and cut out the final (3rd) layer of circular porthole frames with the jigsaw. These were then screwed in place completing the porthole framing. Some of my jigsaw cutting isn’t that accurate. The outside edge will be concealed by the lining and isn’t important. However the inside edge needs to be accurate to allow the porthole and liner to fit snuggly. Richard (the joiner) advised me, if necessary he will run his router around the inside edge of the frame.

All the timber for the floor battens has now been stacked inside Waiouru ready for tomorrow. It’s 4”x1” tanalised pine. Richard wants four longitudinally timber battens with short cross battens between them. The battens are to be screwed to the steel joists using wood screws. Consequentially, each screw hole will have to be pre-drilled through the top of the steel joist. The idea is to finish with a batten matrix of 2ftx2ft squares.

Originally the battens consisted of 4”x2” pine so we have gained an extra inch of internal headroom by using a one inch batten. Another advantage is this time we will be using tanalised pine, which is more rot resistant.

Once the floor battens are installed the timber supports for the underfloor insulation panels (1” Kingspan) will be screwed in place. The aim it to complete as much of this as possible tomorrow.

Yesterday’s Waxoyl has started to go off but I suspect it will always be slightly sticky. Which I presume is what is supposed to happen?

On a final note……..

Happy Birthday “Young Bill”. Despite claiming you’re older than us….. You’re not!

Another Move

noreply@blogger.com (Tom and Jan) — Thu, 01 Mar 2012 13:03:45 PST

But first….. This is for Bill <private joke>

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Gary and Ruth have very kindly allowed us to use their boat (nb Molly) as temporary accommodation whilst we wait for Waiouru to be completed. Molly is now moored at Aldermaston and we moved aboard today. It took us most of the day to complete the move as we hadn’t realised just how much “stuff” we have acquired since arriving in the UK last May with our worldly goods in two 20kg suitcases.

Now it’s a case of finding a home for all these new “possessions” aboard Molly. We enjoyed our time on Ufton but she is now required for repainting and pre-season maintenance. Molly is different in many ways so that makes the change in boat quite interesting. For example; she is a Trad, has LED lighting and the electrical system is slightly different to Ufton. She provides yet another opportunity to validate our own decisions about the layout and systems we have planned for Waiouru.

Back to work in Waiouru tomorrow.

First Trip on Waiouru

noreply@blogger.com (Tom and Jan) — Wed, 29 Feb 2012 11:32:24 PST

Three tasks done today and a first trip on Waiouru. All the plywood sheets for the floor were dragged out of the timber rack and placed against the fence.

Two coats of a waterproof sealer on either side and then stacked back in the rack for when they are required.
The Waxoyl was in the chandlery where it had been kept warm and “hopefully” the viscosity will be sufficiently thin to apply.

It was not to be! The stuff was the consistence and colour of clarified butter and simply wouldn’t pour out of the cap opening. In the end I used a hacksaw and cut the top off one of the cans. It was then a case of quickly and roughly spreading it on the baseplate between the steel joist with an old paintbrush. The fumes were rather strong….. hence the heading “First Trip on Waiouru”! Only one 5 litre tin was required so the second was returned to the paint store.

The plan is for the fumes to evaporate overnight. Last job of the day was to carry all the tanalised pine for the floor battens from the workshop to the side of Waiouru for easy access tomorrow where (hopefully) a start will be made on laying the floor.

No more damned foam!

noreply@blogger.com (Tom and Jan) — Tue, 28 Feb 2012 09:05:19 PST

Am I going to sleep well tonight! My morning was spent with a cross cut saw in one hand and a straight edge in the other. The foam has now been cut back on the walls above and below the gunwale. I’ve decided to leave the ceiling until the floor is installed as it will be the most difficult part of the whole job. I can confirm cutting back foam is a messy job. It get in your hair, eyes, pockets, socks, ~~bellybutton and nether regions~~.

The afternoon was spent cleaning up in preparation for the Waxoyl. I adopted a two step process. First I removed all the large foam offcuts using a broom, kitchen tidy and rubbish bin.

I took approximately 20 rubbish bins of foam to the large industrial waste bin and it was full by the time I finished. Others in the boatyard will also need to dump their rubbish in the waste bin so; using a small stepladder; I climbed into the bin where I stomped around as if I was pressing grapes. My actions resulted in the foam being compressed into the bottom half of the bin.

Then I used a paint scraper and cold chisel to clear all the foam overspray off the baseplate and out of the drain holes at the ends of the steel floor joists. Finally I vacuumed the baseplate so the surface will be clean for the application of the Waxoyl tomorrow morning.

We now have two inches of well applied foam insulation. Waiouru should be warm in winter and cool in summer! We could have left the insulation in it’s original state but I’ve always believed If a job is worth doing…… it’s worth doing well! I know we won’t have to worry about the quality of the insulation.

Meanwhile Paul was checking on the boat painting being done by Richard and Mark.

The four blue hire boats are being repainted before the start of the season.

Jan had gone off to chat with the new neighbours. They appear to be settling in well and I wouldn’t be at all surprised if Jan doesn’t start feeding them.

Apparently a fox got the chickens so the farmer is going to restock!

Will they…. Won’t they!

noreply@blogger.com (Tom and Jan) — Tue, 28 Feb 2012 04:28:47 PST

Well, would the spray foam contractor arrive? 10.30am came and went with no sign of them. Jan started to get very cynical but then at 11.00 a white van arrived.

There were two of them and when they first started asking me about the job I thought they were from eastern Europe. OK, I’m attempting to get used to the various accents and I’m also slightly deaf. Eventually I realised they were English and had driven 4 hours from Doncaster leaving at 7.00am.
They did a quick inspection of the existing insulation in Waiouru before telling me the foam had been very poorly applied with numerous areas needing removal. I was somewhat disappointed as I’d already removed some poorly applied foam. If I’d known how to identify the remaining substandard foam I could have also removed that prior to their arrival. We set to it and ripped out the remaining substandard foam. The technique is to gently tap the foam with your knuckle. If it make a “ringing” sound it’s OK. A “soft thud” means it hasn’t correctly adhered to the steel. If it hasn’t adhered to the steel then a layer of condensation will build up between the foam and the steel. Eventually this will rust and the spray foam will fall away.

I’ve always been of the belief that Ben Harp personally applied the spray foam to the boats he built. I base this on a comment from Tim Tyler that Ben had asked him (Tim) if he (Ben) could spray foam the shell after ours whilst it was at Tim’s premises. Also, our surveyor had seen spray foam equipment in Ben’s container. Today I did a more detailed search of the online records at Companies House where I found this……..

Name & Registered Office:
ROOFSPRAY INSULATION LIMITED
8 WELLINGTON CLOSE
STAFFORD
UNITED KINGDOM
ST16 3FZ
Company No. 06754708
The same address as Ben Harp Narrowboat Builders
The company status: Dissolved 13/07/2010 (NO ACCOUNTS FILED)

So; another failed Ben Harp company which he has walked away from leaving behind a mess. I suspect he’s just as incompetent a spray foam applicator as he is boat builder.

[Back to today’s work]

My standard of masking the timber battens was acceptable so the contractors started applying the foam. I was warned there would be a significant amount of foam to be cut back after they had finished. This was because the existing foam was unevenly applied. They also wanted to ensure all the steel was adequately covered.

Do not adjust the colour on your screen! Yes, some of the foam is actually purple. It’s a new type of foam and the remains of the last job were still in the lines.

We now have a 2” layer of foam on the walls and ceiling. The contractors showed me how to cut it back using a 26” cross cut timber saw and then left for Doncaster facing another 4 hour journey. Four hours may not seem much when driving empty roads in Australia but it’s somewhat more of an ordeal on busy UK roads.

Before they left, the guys advised me to cut back the foam as quickly as I could. The longer I left it; the harder it would be to cut. I immediately started by first stripping all the masking tape off the battens. Then I commenced the cutting back using the saw. By 5.00pm I had cut back one side above the gunwale line. I estimate this is about a 5th of the work completed. Tomorrow I intend to finish all the walls. At this stage my plan is to leave the ceiling until the floor has been laid. The ceiling will be the most difficult part of the job and having a level floor will make the task easier. I’ll also be closer to the ceiling.

So I know what I’ll be doing tomorrow!

What a Blast

noreply@blogger.com (Tom and Jan) — Sun, 26 Feb 2012 04:02:15 PST

Doug returned to clean off our first attempt at blacking Waiouru. This time the grit was white rather than the usual black!

I just hope all this grit blasting hasn’t worn holes in Waiouru!

Jan and I then repeated our earlier painting performance and managed to get one coat of two pack blacking onto the bare steel before it was dark. Only two more coats to go!

We were both rather ‘bushed’ after spending most of the day either kneeling, squatting or bent over. The evening was spent removing the black freckles from our faces.

Blacking seemed to be in fashion as Paul also blacked the lower half of Cygnus.

Now we must wait on the spray foam contractor’s arrival tomorrow.

Crane Day

noreply@blogger.com (Tom and Jan) — Sat, 25 Feb 2012 09:06:39 PST

Another of those crane days at the boatyard when the hire crane completes a large number if lifts. First it was Paul’s recently purchased butty (Cygnus) which arrived on a Tuckey ~~artic~~ lorry. It was somewhat of a squeeze but the driver eventually made it to the wharf.

Cygnus was temporarily placed into the water as the ~~truck~~ lorry had been booked to take one of the boats on the boatyard hardstanding to its new home.

Next nb Greyfisher went back into the water. No, she isn’t going over the top of Waiouru.

Two more lifts, including Cygnus coming out of the water, and then Andy decided to lift Waiouru……. all of 6 inches!

Yes, that’s me in my blue ‘playsuit’. ~~I just needed to push Waiouru 12 inches to recover my pencil.~~ The objective of the exercise was to level her on the dunnage for the joiners.

Making Donuts

noreply@blogger.com (Tom and Jan) — Fri, 24 Feb 2012 10:34:12 PST

Jan isn’t the only person in the family who can make donuts. Today I successfully made 22 of them.

Richard and I started making them as a single cut out but then Richard realised this method would result in a large timber wastage rate. We changed the method to half donuts and significantly reduced the required number of sheets of plywood.

They will go around the porthole opening and act as a frame for the liner.

There are 11 portholes and each requires three frames to pack it out to the level of the cabin lining. After the frames had been cut I scraped the foam insulation from around the porthole surrounds so the frames could be installed. Jan and I then glued and screwed two layers of frames around 10 of the portholes.

The eleventh porthole is the one I had previously cut out with the jigsaw. It didn’t have any fixing screw holes through the steel, and as Jan and I had previously discovered the old holes don’t line up with the new portholes, I decided to glue and clamp the frame.

Now remember Waiouru had previously been lined and the portholes installed. So how did the previous boat builder manage to fit the timber porthole linings without there being a timber frame around the porthole?

The last task was to tape all the exposed surfaces with masking tape in anticipation of the spray foam contractor’s arrival on Monday.

Whilst reading blogs yesterday I noted from the photos on Trudy-Anne’s blog that David has the same make and model of digital gauges <photos here> as I would like on Waiouru. His photo provides my first opportunity to get an idea of their actual size. I’ve specified four (water, waste tank, and two fuel tanks).

Another of those Special Family Days!

noreply@blogger.com (Tom and Jan) — Thu, 23 Feb 2012 23:23:46 PST

Happy birthday Steven……… Don’t the hands on the clock spin!

Tyle Mill

noreply@blogger.com (Tom and Jan) — Thu, 23 Feb 2012 05:44:59 PST

After yesterday’s bitter cold we woke to a warmer day and I decided to walk the 11 mile round trip to the Sainsburys supermarket at Calcot. The majority of the route uses the towpath which gives me an opportunity to see what has been happening along this stretch if the Kennet and Avon.

The river and canal regularly join and separate along the route which enabled me to confirm the advice I’d previously received that where they combined it would be ice free.

Tyle Mill is the approximate halfway point. There is a lock, (Tyle Mill) permanent moorings and a BW facilities block.

BW facilities

Waterscape describes the available facilities as a water point plus rubbish and elsan disposal. The majority of the permanent moorings are above the lock with a very small number of moorings opposite the BW facilities

Up stream of Tyle Mill are facilities at Aldermaston Wharf whilst there don’t appear to be any facilities downstream until the Thames.

Oh…… I’m in a little difficulty over the shopping. I was sent on my way with a written shopping list. However I appear to have a “man shopping” habit. This habit manifests itself by walking around the supermarket and throwing anything that looks slightly interesting into the trolley rather than confining one’s selection to “The List”. Apparently this habit can be ~~controlled~~ supressed if one is accompanied by a female.

Anyway, we are now the owners of two packets of chocolate biscuits, four blocks of chocolate and a large tub of double cream. None of these items were on “The List”! I’m informed have to curb this habit as it is playing havoc with Jan’s budget. The additional weight in my ~~daypack~~ rucksack is another incentive. Still, the thought of now having the ingredients for lemonade scones with whipped cream and blackberry jam will probably result in another lapse!

Bouncing Around

noreply@blogger.com (Tom and Jan) — Wed, 22 Feb 2012 07:41:13 PST

Suddenly Ufton started to bounce around on her mooring. She was being dragged fore and aft as the water surged around us. The mooring ropes groaned and strained. The air was full of the noise of adjacent boats grinding together. Then I heard the sound of an heavily reving engine. It’s the off-season and the hireboats are moored four abreast against the wharf. There is plenty of room for a narrowboat to pass but this was a broadbeam, and it sounded large.

Peering out the saloon window I could see it was Nelson, the BW broadbeam workboat, and it was towing a large dredging barge containing a tracked excavator. The canal is shallow on the far side and Nelson was making hard work of attempting to tow the barge which was constantly running aground. As the barge passed us I could see the excavator operator was assisting by pushing with the excavator bucket. BW have been repairing the canal embankment one lock downstream so I assume they have finished that task and are moving on to the next job.

Well that was the daily excitement………..

Zilla!

noreply@blogger.com (Tom and Jan) — Tue, 21 Feb 2012 13:27:52 PST

Thanks to the wonders of Skype we’re able to speak on a weekly basis with the rest of the family living at the bottom of the world.

My mother told me last week she’d had a fright when she woke to find “Zilla”, her dog, lying like a log beside her bed. Since mum became a widow he has appointed himself head of the house and now ventures into areas previously forbidden. These days he’s very old cantankerous mongrel, almost 18, blind, deaf and afflicted with the greek disease... arthritis! Before age caught up with him he was an ornery critter, prone to biting the legs of unwanted Jehovah Witnesses and vacuum cleaner salesmen.

Initially she though he had gone to dog heaven, but then realised his little belly was slightly rising and falling at a very slow rate. He wouldn’t respond to any of her efforts. Mum left bowls of water in his favourite spots around the house and then went to the local chemists on her mobility scooter to collect a prescription. She voiced her concerns about Zilla imminent departure to the chemist who very kindly offered to collect him and take his remains to the vet for cremating should he depart this world.

Mum returned home to find Zilla still beside the bed and comatose. The next morning he was beside the bed unmoved. By midday mum had decided to take her mobility scooter to the local vet where she asked the receptionist what a cremation would cost. To mum’s surprise they still had Zilla’s records on their database (he hadn’t been to the vet for 12 years!). Cremation was $40 and if a needle was required to ease him on his way it would be an additional $47. Mum couldn’t bear the thought of Zilla suffering so she resigned herself to finding $87.

When she returned home Zilla wasn’t beside the bed. In fact she couldn’t find him in the house! Grabbing her walking sticks she hobbled to the back yard where she found a “frisky” Zilla prancing around the garden watering the trees and sniffing for pussy cats! He’d lost 10 years.... What the #$% had happened to him?

Later that afternoon Tania; mum’s cleaner; arrived and started vacuuming the bedroom. She called out “Julie, why is your little pill case empty and on the floor beside the bed?” This is the case that contains a single valium tablet for mum’s emergency use during the night.

The bloody dog wasn’t near death. He’d taken a two day trip without leaving the house!

First Look at Portholes & Hatches

noreply@blogger.com (Tom and Jan) — Tue, 21 Feb 2012 05:30:47 PST

We made a number of boat design decisions at the beginning of this project. Portholes instead of windows, and houdini hatches to let in more light plus allowing summer heat to escape. The houdini hatches will have blackout and insect screens. Minimal brass; I’ve polished enough of that in my life thank you! We wanted to be cool in summer and warm in winter. Hence the decision to double insulate the walls and ceiling as well as having insulation under the floor. Finally we decided all the glass would be double glazed.

Today we unpacked our portholes and houdini’s so we could finally see what we had ordered.

First impression was, they are very solidly built. The top half opens which allowed me to see the thickness of the frame.

The distance between the inner and outer surfaces of the double glazing is approximately one inch (25mm).

The houdini hatches also have a very solid feel about them. Prior to examining them I though they might be the security “weakpoint” in the boat but I’ve now changed my mind.

They are actually quite heavy and the thickness of the double glazing is very similar to the portholes. We are quite pleased with the quality of the product.

Hopefully they will all be fitted either later this week or early next week.

More GPS Points of Interest (POI’s)

noreply@blogger.com (Tom and Jan) — Mon, 20 Feb 2012 07:46:49 PST

No sign of the spray foam contractor today, so we will have to wait for Andy to return from holiday tomorrow to find out when the insulation will be completed on Waiouru. Hopefully it will be later this week as the carpenters are waiting to work on the installation of the floor. The can’t fit the floor until I apply the Waxoyl to the baseplate and this can’t be done until the spray foam is fixed.

This morning I scrapped all the damaged foam insulation from around the filled in porthole in the ~~hope~~ anticipation the contractor will arrive very soon.

I’ve spent much of the last few evenings collecting and filtering information from the internet which may be of use to us whilst living on Waiouru. This has been added to our Garmin gps database.

The first thing I wanted was the location of every Calor Gas outlet within walking distance of a canal. There are a significant number as can be seen from the following screen dump.

Of course this information becomes more legible as you increase the map scale.

Jan has been making purchases from Dunelm Mill so I’ve collected that information.

I even made the small Dunelm Mill icons. Other poi’s collected and saved include Lakeland, Julian Graves, Homebase, B&Q, etc.

Rear Cabin Doors

noreply@blogger.com (Tom and Jan) — Sun, 19 Feb 2012 00:58:15 PST

I’ve been concerned about the weather and the potential for the new rear cabin doors rusting since they were installed so I was up reasonable early to give them a coat of primer.

The first thing I noticed was the method used to fix them to the door frame. When the doors arrived from Nick Thorpe I noticed each hinge had two holes.

I thought these holes were to enable the doors to be bolted to the frame. How mistaken I was! The welder actually used the holes to weld the door to the frame and then filled in the weld to provide a flush finish. This is a much more secure way of fixing the door to the frame.

The hinges and edges of the door have now been given a coat of primer. I also used the time to paint the bare metal on the filled porthole. Now we must wait the arrival of the spray foam contractor.

Three Valleys

noreply@blogger.com (Tom and Jan) — Sat, 18 Feb 2012 12:58:44 PST

Woke to a mild day and decided not to pass up the opportunity to get some time walking the countryside. Meanwhile Jan had decided to bake scones and whip some of that double cream I’d purchased from Calcot the previous week.
I’d earlier programmed a route into the Garmin gps from the OS website and headed off along the towpath towards Woolhampton. Scarcely had I left the wharf when I was hailed by Bill, a blog reader and owner of nb Sea Vixen. It’s always good to meet one of our blog readers. I need the feedback if I am to improve the quality of the blog! Bill informed me he had read my latest post regarding the proposed position of our bow thruster and mentioned his was also offset. He then offered to show me his installation, which I willingly accepted. Whilst we were discussing all things related to bow thrusters he mentioned the thruster being offset did result in a slight variation in thrust between sides. However I think we can live with that.
The walk took me west to Woolhampton and then north before heading east.
Whilst walking beside the main road I came upon a milestone. Although I’ve read about them, this was the first I’d seen. The writing was illegible but a mile further on I came to a second and it was possible to just make out the word “London” and 48.

On the left side I could see the faint word “Reading” and 9

I crossed two ridgelines and three valleys but didn’t manage to find any serious hills for a strenuous workout.
Initially I thought I’d come upon a pub but apparently not.

Then the signpost opposite caught my eye.

I just had to walk along Cock Lane to “Tutts Clump”. Can you imagine telling people you live in Tutts Clump!
On my return I downloaded my exact route from the Garmin to the pc whilst simultaneously stuffing into my mouth home baked scones with blackberry jam and whipped cream.

Exactly 20 kilometres.

Some Progress

noreply@blogger.com (Tom and Jan) — Fri, 17 Feb 2012 06:23:35 PST

Day 5 and still no spray foam contractor <sigh>! However the welders arrived this morning to fill in the incorrectly positioned galley porthole.

There are some blemishes on the join so it will have to be covered in filler and sanded back before I give it the mandatory two coats of primer. I wanted the first porthole filled before they cut the adjacent porthole as I was concerned about potential distortion of the cabin wall. Once the porthole was filled there was a discussion about the best way to cut the new porthole. In the end the decision was made to use a jigsaw and cut it out using the same technique as I used on the previous porthole.

Now the wall oven will fit into the galley!

Pete and his mate went on to fit the steel cabin doors at the stern. We’ve had a discussion about this task and eventually decided an additional horizontal steel strip will be welded across the inside face of the rear hatch. This will act as both a weatherproof stop and provide a strong edge for the tongue of the mortise lock to fit behind.

I hope the spray foam contractor arrives early next week as we can’t proceed any further until the insulation is finished.

An Answer

noreply@blogger.com (Tom and Jan) — Thu, 16 Feb 2012 02:20:56 PST

Two days ago I wrote about the location of the bow thruster in the tube. Since then I have written to the supplier regarding my proposed location and asking whether there will be any issues. I want to position the thruster towards one end of the tube thereby improving the available unrestricted storage space.

Top view of the bow thruster locker

I want to locate the bow thruster to the left of the weed hatch [A] whereas the boatyard suggest it go in the middle of the tube [B]. I suspect there may be sufficient room above the thruster to fit the two 12v batteries. This would then give us the entire area to the right of the weed hatch for storage.

The bow thruster supplier’s reply to my query was that my proposed location would work but there might be a very slight difference in the amount of thrust at opposing ends of the tube. I’m not surprised by their comments. Although I’m no hydrologist, I consider the basic principles of the movement of water to be very similar to electricity. I know a little about distributing electricity. Voltage is the pressure applied to push the electricity down the wire. Current is the amount (volume) of water being moved. Resistance is the restriction on the movement of current (volume of water) caused by the size of the wire (diameter of the pipe) Obviously the further you want to push the current (volume of water) the greater the resistance. To overcome this you must either increase the required voltage (pressure), or reduced the resistance by having a larger wire (or pipe). Power is the voltage (pressure) multiplied by the current (volume of water).

The size of the tube isn’t going to change. The amount of pressure produced by the thruster impeller isn’t going to change. So we will have more resistance at the long end of the tube and consequentially get less power at that side of the boat. But the tube is only 4ft long so I consider the loss of power at the furthest end will be minimal.

Howling Time!

noreply@blogger.com (Tom and Jan) — Wed, 15 Feb 2012 00:18:59 PST

Well for the second consecutive day the spray foam contractor didn’t arrive. Even more annoyingly we don’t have any contact details for him to find out when he is scheduling the work. Needless to say we are both grumpy!

The sole downside of having a wife who is a fantastic cook is it all goes to the waistline! In an effort to combat my affliction I decided a walk was in order and headed down the towpath to Woolhampton.

Jan and I have been discussing whether we might try a pub Sunday roast. It’s something I’m ambivalent about (who wants to eat out when married to a great cook!) but I could tell Jan is looking for a break. The Rowbarge is beside the canal at Woolhampton and there are two other pubs on the main road through the village. Perhaps we will try one of them next weekend.

Don’t be fooled by the date. One of the passing locals told me it was approximately 100 years out! Still, 1820 is earlier than the arrival of the first European settlers in New Zealand.

From Woolhampton my direction took me north around the abbey and then I following the public footpaths in a general northeast direction before hitting a high chain mesh fence topped with three strands of barbed wire. Actually there was an inner and outer fence. I worked my way around the outside of the fence until I came to the entrance gate and a couple of buildings.

The auto-focus on the camera struggled with the fence so the building is slightly blurred. However there is a large sign on the right side of the building.

The sign on the roadway explained everything. So if it’s a full moon you know it’s not just me that’s howling!

I ~~stupidly~~ inadvertently allowed my mind to wander walking along the interesting paths looking at the snow covered countryside. But was suddenly jolted back to reality when I realised an hour had passed. Turning south I walked up onto the ridgeline where I was able to get a view of the Kennet valley. That’s when I realised I’d wandered well to the east of my intended route. It was a long ‘slog’ back to Ufton where I had a late lunch.

Afterwards we decided to pumpout Ufton. It wasn’t urgent but you never know what might happen during the next week. Unfortunately the last person to use the pump out hadn’t drained the water from the pump and it had frozen. Nick and I dragged a portable diesel heater around to the pump and warmed it for 10 minutes to defrost the pipes. The water tapes were all frozen solid so Jan and I completed the pump out without doing the rinse. People in love should share life’s pleasures. Well it’s only fair…… we both put the ‘stuff’ in the tank so we should both remove it!

Bow Thrusters

noreply@blogger.com (Tom and Jan) — Tue, 14 Feb 2012 04:24:35 PST

Well the spray foam contractor didn’t arrive yesterday and as of now, he hasn’t contacted the yard to say he will be here today. On a more positive note, the welder has arrived. He and I have discussed the movement of the porthole opening in the galley. However he has some other tasks to be completed first. Maybe our porthole and cabin doors will be done later today or tomorrow!

Recently Bob left a comment asking about bow thrusters. This appears to be another of those cassette –v- pumpout subjects. Four years ago, when we initially started designing Waiouru we asked ourselves whether we actually needed a bow thruster. Our hire boats never had them and many privately owned boats don’t. Obviously the early narrowboats didn’t have one and they managed. In the end we decided to include the tube for a bow thruster in our shell specifications. If money was available we might fit one. It might also be a selling feature when our life afloat ends.

Having decided to fit a tube I then researched size. IMHO size IS important. A narrowboat is long, thin and quite heavy. The purpose of the bow thruster is to push the bow sideways. I assumed the bow thruster would only be used because the circumstances (wind, current, etc) preclude the manoeuvre being completed using just the engine. So the bow thruster will need some “grunt”! I therefore specified a 10hp unit This appeared to be about the largest available for a narrowboat.

Bow thrusters can either be electric or hydraulic. The hydraulic version usually runs from a pump mounted on the engine and it can be operated for prolonged periods. The electric version is usually connected to lead-acid batteries which are located in close proximity. The batteries can be quickly drained or overheat if the bow thruster is used for for more than brief periods.

In the end I decided if we had a bow thruster, then it would be infrequently used, (I hope!) so we should fit an electric version.

Obviously we were on the far side of the world when Waiouru was first being built and we had expected the boat builder to ensure our contract specifications would be met. Waiouru has a bow thruster tube but there was no weed hatch. The diameter of the tube is 190mm, which isn’t sufficient for a 10hp unit. My friend (google) informs me the maximum size unit we can fit is 8hp. This has a blade diameter of 185mm.

After examining the bow thruster locker I realised there was probably sufficient room for the bow thruster to the left (port side) of the weed hatch. It would be close to the left end of the tube making it easier to remove any trapped foreign objects. More importantly, it would free up the rest of the locker for storage. However the boatyard staff have informed me the unit must go in the middle of the tube. I remain unconvinced! All the unit does is push water out of the tube one end and suck it in the other. I accept there would be greater resistance and some potential loss of power sucking water from the ‘long’ end of the tube. However I suspect this would be negligible. So I’m waiting to see the evidence (rather than opinion) that my preferred location for the bow thruster is incorrect.

At the moment the plan is to run the wiring for the bow thruster but delay any decision regarding purchase and fitting until we see what our finances look like towards the end of the build.

Knitting Blankets

noreply@blogger.com (Tom and Jan) — Tue, 14 Feb 2012 03:17:00 PST

WARNING - There is nothing boatie in this post

Some time ago I posted a photo of a blanket Jan knitted. It was made by knitting woollen squares using a technique that allows the individual squares to be knitted together rather than being sewn.

These are the instructions from Jan.

INSTRUCTIONS FOR KNITTING SQUARES (NO SEWING)

Size 10 needles 8 ply or double knit wool

Slip 1st stitch on every row. Knit into back of every last stitch.

Row 1 – Cast on 29 stitches
Row 2 – K13 K3 together K13
All odd number rows - Knit
Row 4 – K12 – K3 together – K12
Row 6 – K11 – K3 together – K11
Row 8 – K10 – K3 together – K10
Row 10 – K9 – K3 together – K9
Row 12 – K8 – K3 together – K8
Row 14 – K7 – K3 together – K7
Row 16 – K6 – K3 together – K6
Row 18 – K5 – K3 together – K5
Row 20 – K4 – K3 together – K4
Row 22 – K3 – K3 together – K3
Row 24 – K2 – K3 together – K2
Row 26 – K1 – K3 together – K1
Row 27 – K3 together

First square is now complete.

Cast on 15 stitches & pick up 14th stitch from the first square
Knit one row and now you have 29 stitches.
Continue as for the first square.

If you want the diagonal line in each square to appear as a defined pattern in the blanket you need to do some thinking about where to pick up the stitches for the subsequent square.

There will probably be some “trial and error” along with some serious ~~swearing~~ thinking! Jan found that poking one’s tongue out the corner of the mouth helped her concentration when teaching herself the technique!

No Spray Foam

noreply@blogger.com (Tom and Jan) — Mon, 13 Feb 2012 05:13:19 PST

This morning we were advised the spray foam contractor had phoned the boatyard to advise he wouldn’t be coming today as he has something in his eye. The job has been rescheduled for tomorrow.

Andy had already indicated the boatyard staff would cut out the porthole opening in the back cabin as he didn’t want to risk the heat from the welder’s gas plasma cutting affecting the glue holding the panel in place.

The delay in the spray foam job seemed to provide an opportunity to cut the porthole opening. I asked the boatyard staff if they had a drill, jigsaw and some steel saw blades suggesting I could do this for them.

The first think I did was remove the spray foam from around the inside of the original opening.

The boatyard staff had considered making a template and then cutting from the outside of the boat. However I thought the current hole would make a good template and it would also avoid minimise the occurrences where both layers of steel would be inadvertently cut. The spray foam came off reasonably easily.

The next step was to drill a series of holes around the circumference of the template. Only one hole is required to insert the jigsaw blade but multiple holes would enable me to more easily remove the blade when I needed a rest.

The cutting actually took much less time than I had expected. The original opening made an excellent template and my only issue was the hot chips of steel off the blade which tended to splash onto my face and go down the front of my shirt. The shards of steel can hide in my navel along with yesterday’s foam chips.

Yes; I wore my protective, earplugs, overalls, gloves and glasses!

Who’s that happy girl?

Tomorrow the spray foam contractor can respray around the new opening.

Oh Hell! She’s taken a photo of me!

Back to painting the engine compartment.

Blog Comments

noreply@blogger.com (Tom and Jan) — Mon, 13 Feb 2012 00:09:29 PST

I’ve been slightly frustrated at not being able to leave a comment on some of the blogs I follow. I can write the comment but then it just disappears when I click the preview button. Why do I click the preview button? Because often the security word doesn’t appear unless I first preview my comment. This problem is confined to Blogger.

Today I searched google and found the following advice which reputedly overcomes the problem <click here>.

The recommended solution is for the Blogger blog owner to ensure their comments setting is configured for a pop-up window. Settings –> Comments –> Comment Form Placement –> Pop-up window.

I don’t know if this is solution is valid, but I can confirm it’s the blogs with the embedded comments window at the bottom of the post where I’m have a problem. If I have to click on “comments” to get a pop-up comments window then I can successfully leave a comment.