Draft Survey, This survey is to determine the quantity of the cargo which transported in bulk such as iron ore, coal, steel scrap, salt, palm kernel and the other bulk cargo.
In draft survey, cargo quantity are computed based on the change of ship's draft prior to and after the loading or discharging by using the scales or tables which equipped on board the vessel or barge.
In principle, draft surveys require only a measurement of the water displaced by the vessel before and after the cargo is transferred, along with a measurement of the water’s density. Water displacement is measured through draft marks on the ship and converted to a volume using draft tables. The weight of displaced water is calculated by multiplying its volume (displacement) by its density. The difference between the weights of water displaced before and after the cargo transfer will equal the weight of the fertilizer within measurement accuracy limits.
In practice, draft surveys are complicated procedures that require a highly qualified draft surveyor. Overall accuracy will depend on the surveyor’s skill in dealing with:
- Reading the draft is the first step
- The varying density of sea or river water
- Changes in quantity of ballast between initial and final draft readings
- Changes in consumables on the vessel between initial and final draft readings (fuel oil, potable water, etc.)
- Allowance for trim, list and deformation corrections ( uses data from the vessel’s draft tables)
- Accuracy of the ship’s draft tables
- Ship light weight
- Store and constant
- Condition of the vessel’s draft markings
- Weather and sea conditions at the time of reading (pitch and swell)
- Weight of the cargo loaded when compared to the total capacity of the vessel
- Weather and day-light
- Accurate calculation must be done,
the accuracy of draught survey
may vary for several reason, discrepancy in draft survey result between the points of loading and unloading may give rise to commercial dispute between the sellers, vessel operators, buyers and surveyors.
If you want, i have formula for calculation draft survey, it easy to use and applicable for beginner surveyor, Junior surveyor and senior surveyor or everyone who interest about draft survey,
please email to
ruly.abdillah@gmail.com with subject
Draft Survey Calculation.
Without spending much money, I even gave a lot of bonuses such as Tank Sounding and Ballast Water Template, how to create a Certificate of Quantity, Constant Automatic Calculation Finding, Draft Statement Template, Ship's Particular and Cargo Particulars Template.
Oke, don't waiting for !
send message and email me to
ruly.abdillah@gmail.com with subject
Draft Survey Calculation
this legal software and not company property, we create for own use only, you only need to spend a little money for our royalty,
Only USD 30.00 for this valuable program & Bonuses
you can settlement to our
paypal
account at ruly.abdillah@gmail.com or
cash transfer to our local bank at Indonesia,
Bank Syariah Mandiri with account No. 0380114456 put draft survey in your message.
Or
Transfer / Cheque to Account :
BANK SYARIAH MANDIRI Batam Branch Sulaiman
Account No. 0380114456
to Ruly Abdillah
