Marine Surveyor Information https://sevensurveyor.com/ The news and information for marine surveyor, ship surveyors, cargo surveyors, marine cargo inspector, and the steps to conduct survey for draft survey, petroleum survey, bunker survey, includes marine survey software Wed, 11 Feb 2026 08:07:03 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://i0.wp.com/sevensurveyor.com/wp-content/uploads/2025/08/cropped-blue-trans-512-e1755762824566.png?fit=32%2C32&ssl=1 Marine Surveyor Information https://sevensurveyor.com/ 32 32 23076466 Coal Spontaneous Combustion https://sevensurveyor.com/coal-spontaneous-combustion/ https://sevensurveyor.com/coal-spontaneous-combustion/#respond Fri, 19 Jul 2019 09:50:37 +0000 https://sevensurveyor.com/?p=3098 How Coal Self-Ignites? The coal’s temperature begins to climb above ambient. At about 150-300 degrees F, it begins to give off minute, but measurable, quantities of gas–aerosols, hydrogen, and CO (2)–precursors of combustion. As the temperature increases further–at about 600-700 degrees F–relatively, large, visible particulates are emitted. Soon, as the heating rate increases in intensity … Continue reading "Coal Spontaneous Combustion"

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]]> https://sevensurveyor.com/coal-spontaneous-combustion/feed/ 0 3098 Draft Surveyors Opinion https://sevensurveyor.com/draft-surveyors-opinion/ https://sevensurveyor.com/draft-surveyors-opinion/#respond Wed, 22 Feb 2017 12:22:58 +0000 http://www.sevensurveyor.com/?p=2717 Draft Survey Accuracy in Surveyor’s Opinion Ship to ship operation between ship and barge is the most draft survey dispute cases experienced by draft surveyor. This condition is left question; How accurate is draft survey? As known, there are many factors affecting the accuracy of draft survey. You can check at following post >> – … Continue reading "Draft Surveyors Opinion"

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]]> https://sevensurveyor.com/draft-surveyors-opinion/feed/ 0 2717 What is Bunker Quantity Survey? https://sevensurveyor.com/what-is-bunker-quantity-survey/ https://sevensurveyor.com/what-is-bunker-quantity-survey/#respond Wed, 22 Feb 2017 08:59:51 +0000 http://www.sevensurveyor.com/?p=2666 What is Bunker Quantity Survey? A bunker quantity survey is taking measurements on board the delivery barge or at the shore tank and on the receiving vessel before and after transferring of oil takes place by involves an approved marine surveyors. How To Do Bunker Quantity Survey? – Surveyor measurements the bunker tanks to determine … Continue reading "What is Bunker Quantity Survey?"

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]]> https://sevensurveyor.com/what-is-bunker-quantity-survey/feed/ 0 2666 VNET in Bunker Survey https://sevensurveyor.com/vnet-in-bunker-survey/ https://sevensurveyor.com/vnet-in-bunker-survey/#respond Fri, 05 Feb 2016 02:40:21 +0000 http://www.sevensurveyor.com/?p=2539 What is VNET in Terms of Bunker Survey? Remembered that unanswered question about Bunker Survey VNET by Surveyor on this site. We have collected two similar information to solve it. QUESTION: Recently, many Chinese built vessels using the VNET calibration table for calculation of the bunker received on board and many a time, ended with … Continue reading "VNET in Bunker Survey"

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]]> https://sevensurveyor.com/vnet-in-bunker-survey/feed/ 0 2539 Procedure of Calculations Using Density, API & Relative Density https://sevensurveyor.com/using-density-api-relative-density/ https://sevensurveyor.com/using-density-api-relative-density/#comments Wed, 03 Feb 2016 10:36:47 +0000 http://www.sevensurveyor.com/?p=2533   Working with Density at 15°C in air: 1) Observed Ullage – apply corrections – get Corrected Ullage 2) Observed Interface – apply corrections – get Corrected Interface 3) From Corrected Ullage, find Total Observed Volume TOV (in cubic metres) 4) From Corrected Interface, find Volume of Water (in cubic metres) 5) TOV – Water … Continue reading "Procedure of Calculations Using Density, API & Relative Density"

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]]> https://sevensurveyor.com/using-density-api-relative-density/feed/ 1 2533 ASTM Table Series for Oil Survey https://sevensurveyor.com/astm-table-series-for-oil-survey/ https://sevensurveyor.com/astm-table-series-for-oil-survey/#comments Wed, 03 Feb 2016 09:48:16 +0000 http://www.sevensurveyor.com/?p=2524 Series I – TABLE 5 & 6 – FOR API, °F, 60°F Volume I – Generalized Crude Oils (Tables 5A & 6A) Volume II – Generalized Products (Tables 5B and 6B) Volume III – Individual and Special Applications (Table 6C) Series II – TABLE 23 & 24 – FOR RELATIVE DENSITY, °F, 60°F Volume IV … Continue reading "ASTM Table Series for Oil Survey"

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]]> https://sevensurveyor.com/astm-table-series-for-oil-survey/feed/ 4 2524 Marine Surveyor Work Scopes https://sevensurveyor.com/marine-surveyor-work-scopes/ https://sevensurveyor.com/marine-surveyor-work-scopes/#comments Fri, 27 Nov 2015 09:18:17 +0000 http://www.sevensurveyor.com/?p=2488 Definition of Marine Surveyor (Wikipedia) A Marine surveyor (including “Yacht & Small Craft Surveyor”, “Hull & Machinery Surveyor” and/or “Cargo Surveyor”) is a person who conducts inspections, surveys or examinations of marine vessels to assess, monitor and report on their condition and the products on them, as well as inspects damage caused to both vessels … Continue reading "Marine Surveyor Work Scopes"

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]]> https://sevensurveyor.com/marine-surveyor-work-scopes/feed/ 3 2488 Don’t Even Think To Read This Post https://sevensurveyor.com/dont-even-think-to-read-this-post/ https://sevensurveyor.com/dont-even-think-to-read-this-post/#respond Mon, 29 Jun 2015 08:51:07 +0000 http://www.sevensurveyor.com/?p=2366 It’s maddening when people do the opposite of what we tell them to do. Remind your boss to look at a report, and he puts it off longer. Discourage a friend from taking a job, and she accepts it. Nudge a colleague to drink less, and she pours herself another drink. Tell a child not … Continue reading "Don’t Even Think To Read This Post"

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]]> https://sevensurveyor.com/dont-even-think-to-read-this-post/feed/ 0 2366 Bunkering Tricks https://sevensurveyor.com/bunkering-tricks/ https://sevensurveyor.com/bunkering-tricks/#respond Wed, 08 Apr 2015 09:16:38 +0000 http://www.sevensurveyor.com/?p=2200 Even though the procedure has been tightened, we may see some bunker tanker are still trying to play their tricks, therefore it is very important for Chief Engineer, Vessel’s Crew and Surveyor to know well their tricks. Below are the Tricks of Bunker Supply, trust that most of our Chief Engineers might known the trick … Continue reading "Bunkering Tricks"

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]]> https://sevensurveyor.com/bunkering-tricks/feed/ 0 2200 Negative Constant in Draft Survey https://sevensurveyor.com/negative-constant-in-draft-survey/ https://sevensurveyor.com/negative-constant-in-draft-survey/#respond Wed, 01 Apr 2015 05:57:41 +0000 http://www.sevensurveyor.com/?p=2157 What is Ship Constant? The ships constant is the difference between a vessels design lightship and it’s actual displacement when empty. The ships constant is determined by a draft survey. The ships constant will vary over the life of the vessel. Unintentional Reasons for Variations – Sedimentation in ballast or fuel oil tanks – Corrosion … Continue reading "Negative Constant in Draft Survey"

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