SEA TOOLS

Dew Point & Ventilation

Trim, draft survey & load line

How to use

Set up My Ship once (paste hydrostatics, holds, tanks from your booklet).
Work through loading in order: plan cargo, check load line, trim to finish, then survey.
Soundings feed Draft Survey deductibles; export or print trim and survey worksheets.

Example values — edit any field.

Reference worksheets only. Verify every result against your ship's approved loading computer, stability booklet, and company procedures.

Dry bulb (°C)RH (%)

Dew point (RH)16.7 °C

Wet bulb (°C)Pressure (hPa)

Dew point (psychrometer)17.5 °C

Ventilation (reference only): ventilate when outside air dew point is below hold air dew point; do not ventilate when outside dew is at/above hold air dew. Apply the 3 °C rule between cargo/hold temperature and outside air temperature (not dew vs dew).

Cargo / hold temperature (°C)Hold air dew point (°C)Outside air temperature (°C)Outside air dew point (°C)

Guidanceventilate

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