Worksheet
ADVANCED TRAINING FOR LIQUEFIED GAS TANKER CARGO OPERATIONS
Page 1 of 2
CARGO CALCULATIONS
Measurement data – Tank No. 1 Port
Gauge reading of liquid depth ……………………………………………………………………………………….
Ship’s trim ……………………………………………………………………………………………………………..
Ship’s list ………………………………………………………………………………………………………………
Mean temperature of liquid ………………………………………………………………………………………….
Mean temperature of vapour ………………………………………………………………………………………..
Vapour space pressure ………………………………………………………………………………………………
Molecular weight of liquid ……………………………………………………………………………………………
Density of liquid at 15ºC ……………………………………………………………………………………………..
Volume reduction factor from - 42 ºC to 15 ºC from ASTM-IP Table 54 ………………………………………..
From ship’s calibration tables for Tank No. 1 Port
Correction for trim …………………………………………………………………………………………………….
Correction for list ……………………………………………………………………………………………………...
Level gauge correction ……………………………………………………………………………………………....
Float immersion correction …………………………………………………………………………………………..
Corrected liquid depth = (10020 – 127 + 46 + 1 0) / 1000 ……………………………………………………….
Volume of liquid at calibration temperature ………………………………………………………………………..
100 per cent tank volume at calibration temperature ……………………………………………………………..
Volume of vapour space at calibration temperature ………………………………………………………………
Factor for tank contraction from calibration temperature to - 42ºC ……………………………………………..
Factor for tank contraction from calibration temperature to - 38ºC ……………………………………………..
Volume of liquid calibration temperature …………………………………………………………………………..
Tank thermal correction factor (- 42ºC) …………………………………………………………………………….
Volume of liquid at - 42 ºC …………………………………………………………………………………………...
Volume reduction factor from - 42 ºC to 15 ºC from ASTM-IP Table 54 ………………………………………..
Volume of liquid at 15 ºC …………………………………………………………………………………………….
Density of liquid at 15 ºC (from shore) ……………………………………………………………………………..
Mass of liquid ………………………………………………………………………………………………………….
Volume of vapour at tank calibration temperature ………………………………………………………………..
Tank thermal correction factor (- 38 ºC) ……………………………………………………………………………
Volume at vapour at - 38 ºC …………………………………………………………………………………………
Density of vapour at - 38 ºC =
………………………………………………………………………..
Mass of vapour ………………………………………………………………………………………………………..