Tag: gas tanker

The following example demonstrates the typical procedure outlined using the standard temperature of 15°C as applied to cargo in a ship’s tank.

Measurement data — Tank No.3 port
Product — Propane
Gauge reading of liquid depth  ………………………………….. : 10.020 metres
Ship’s trim ……………………………………………………………. : 2.0 metres by stern
Ship’s list …………………………………………………………………. : 0.5° to port
Mean temperature of liquid ……………………………………….. : – 43°C
Mean temperature of vapour………………………………………. : – 38°C
Vapour space pressure ……………………………………………… : 59 mbarg
Molecular weight of liquid …………………………………………. : 44.097 given by
Density of liquid at 15°C ……………………………..…………….. : 511 kg/m³ shore
Continue reading “Gas Tanker: Specimen of Calculation”

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 and that, when independent cargo surveyors are used, similar times are recorded in the Surveyor’s Time Sheet.

Continue reading “Gas Tanker Calculation Procedures”