Negative Constant in Draft Survey
Apr01

Negative Constant in Draft Survey

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 – Fouling of hull – Coating build-up (paintwork, tank coatings,...

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Inverse Draft Survey
Mar17

Inverse Draft Survey

Few years ago, I have received the email from friend that asked regarding Inverse Draft Survey. The Inverse Draft Survey is doing when the ship has to split the cargo for two or more ports. The method is the same as common draft survey calculation, what the ship officer or surveyor needs to do is preventing cargo less or more discharge at the 1st port. What is the purpose? – To prevent cargo less or more discharge at one port....

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Improving Accuracy of Draft Survey
Jan28

Improving Accuracy of Draft Survey

Previously has posted about the accuracy and factors effecting draft survey, check this link if you need. Now, the post below will relate to the way for improving accuracy of Draft Survey. In draught survey operation several parties are involved and it is to advantage of each party to join the efforts to increase the accuracy. The parties involved are The buyers, the sellers, the charterers, the terminals and vessel’s staff. Assuming...

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IIMS 2014 Conference
May07

IIMS 2014 Conference

The International Institute of Marine Surveying is proud to announce its 2014 Conference and AGM Presenting ‘New Energies in Marine Surveying’ Date: 09 June 2014 (2 Days) Location: Hilton Hotel, Chilworth, Southampton, UK Description: The 2014 Conference (including Dinner and AGM) will be held on the 9th and 10th June 2014 at the Hilton Hotel, Chilworth, Southampton. The Conference theme will be “New Energies in Marine Surveying”....

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Tank Sounding Basic
Mar25

Tank Sounding Basic

In this post, I would like to write about how to do tank sounding for ballast water and fuel oil. Sounding Tools: – Sounding Tape, in meter or feet. For Manual measurement of sounding, a measuring tape normally made up of brass and steel with a weighted bob attached at the end of the tape is used. – Water Finder and Oil Finder Pastes. Sounding pastes are also available for both water and gas oil which highlights the level...

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