Posts about table 53A written by ronmooring. both ASTM and tables , calculations for Special Applications, LPG/NGL calculations). Volume VII – Generalized Crude Oils (Tables 53A & 54A) Volume VIII – Generalized Products (Tables 53B and 54B) Volume IX – Individual. If ” PRODUCTS ” TABLES 54B and 6B are selected, 1, A.S.T.M. TABLES. 2

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We also measure the temperature of the cargo preferably at three levels and take the mean of these three temperatures to get the temperature of the cargo. And as you might have guessed correctly, these ports also do not measure the temperature in Deg C but in Deg F. Thank you verymuch sir.

We need to convert the volumes to the weight of the cargo in each tank. These methods are mostly used for calculation of chemical cargoes. Even when we hear some weight of cargo, let us say Tons of cargo, there are two things that we need to be aware of.

ASTM D – ROFA Products

Really helpful sir, I am preparing for Ch Mates phase I exams ans gable I am from a dry cargo background, this artice really helped me out. Glad you found it helful Jorge.

And even for the main ASTM tables, the information about which table need to be used for cargo calculation is provided by cargo surveyor. There is a simple co-relation between density in vacuum and density in the air. We have the volume at 15 Deg C and we have the density at 15 Deg C.

Here is all you need to know.

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But there are other ASTM tables that supplement these tables that we discussed so far. When we apply this WCF to the standard volume, we get the weight of cargo in Air. We make sure that there are least constants on the ship, the ballast is pumped out to the last drop tqble many other things like these. Thank you very much for your kind effort for explaining cargo calculation in a very simple language.

Even asttm on ships it is more common to measure the cargo hable in the air, sometimes you may find that the charterers would give the requirements for measuring weight in Vacuum.

All this to make sure that we have the capacity to load maximum cargo and ship owner has a chance to earn maximum from it.

Rajeev, Above well explained.

Always waiting for more articles. He has done extensive research on quantitatively measuring Safety culture onboard and safety climate ashore which he believes is the most important element for safer shipping. About Capt Rajeev Jassal Capt.

ASTM Table 53 / 54

Hello, How are you? Here is how the ullage report would look like so far. So in our case, the WCF would be: This is even easier than the previous section that we discussed. Things as simple as cargo calculations. There are no standard tables for chemicals.

This is the reason “Albert Einstein Quotes. So if simply multiply this density with standard volume, we get the weight in Vacuum.

ASTM Table Series for Oil Survey

This is because, like with water, air and any other medium in which the weight is present would offer some kind of buoyancy which reduces the weight. Rajeev Jassal Oct 14, Suvasmit Chatterjee Nov 9, So we then need to either convert the weight in vacuum to weight in the air as we discussed earlier or we can tagle convert the density in Vacuum to density in Air. Let us say the cargo surveyor has provided the API gravity at 60 F to be So let us say that cargo surveyor has provided us with the density at a particular temperature and correction factor.


If we multiply these two, we get the weight by a simple formula. The previous two methods are useful and applicable for cargoes the density for which changes proportionally with temperature.

Coming back to the topic, can you guess for the same amount of cargo which weight awtm be more? In above ullage report, I have applied the WCF to the Gross standard volume but we can easily make one additional column and apply the WCF to the standard volume of each tank to get the weight in the air for each tank.

We multiply both and we get the weight of the cargo.

We need the density of the cargo to convert the volume of cargo tabble the weight. If you can’t explain it simply, you don’t understand it well enough”. The density table could look something like this. Tun Oct 18, Thank you so much for sharing your knowledge in such a simple manner. There is a simple formula to convert these.