Gas Tanker Calculation Procedures
Nov06

Gas Tanker Calculation Procedures

Independent cargo surveyors are often employed by cargo buyers or sellers and the survey companies provide personnel to check cargo operations and cargo quantities both on board ship and within terminals. Such activities can include cargo measuring and cargo sampling. During cargo operations, it is important to maintain a log of events. Ship’s officers and shore personnel should ensure that their time records are in agreement...

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Petroleum Calculation Series: Gas Tanker Principal Products
Nov01

Petroleum Calculation Series: Gas Tanker Principal Products

The hydrocarbon gases methane, ethane, propane and butane may be regarded principally as fuels, the LPGs are also important as feedstock in the production of the chemical gases. Liquefied Natural Gas (LNG) Natural gas is transported either by pipeline as a gas or by sea in its liquefied form as LNG. Natural gas comes from underground deposits. Its composition varies according to where it is found but methane is by far the predominant...

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Draft Survey: The Other Side
Oct08

Draft Survey: The Other Side

Distance Draft Mark From Perpendiculars The above picture show you the distance of draft mark to perpendiculars. Some of you may have finds the above arrangement. But how if you find it for the first time? How do you calculate it? Commonly in the table for draft correction, the distance of draft mark measures to the nearest perpendiculars such as; Distance of Aft Draft Mark to Aft Perpendicular, Distance of Mid Draft Mark to Mid...

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Updated: Marine Survey Software
Jul08

Updated: Marine Survey Software

Recently, I have updated marine survey software for better performance and assist your fast calculation during surveying. In this version there are some updates includes: – Clean and Larger interface with simple and easy data input for the survey. – The software created basis Microsoft Excel files that works best with excel 2007-2013 and it could also working with excel 97-2003. – The presentation is creates by...

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Draft Survey: Barge Overhang Method
Jul04

Draft Survey: Barge Overhang Method

I found this alternative method from draft survey course book, hope it usable. Frankly, I never use this method yet, as we required the barge owners to provide the hydrostatic table for draft survey. The overhang method use the same principles with the method of calculating the volume of a prism. The weight of the barge will be getting by multiplying the volume with the water density where the barge is afloat. Measure the dimension of...

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