Draft
Draft survey
Initial, intermediate and final surveys by the UN/ECE method: corrections to the perpendiculars, quarter mean, first and second trim corrections, list and dock-water density.
DraftPro · for masters, chief officers and marine surveyors
Precision in every draft
DraftPro turns draft readings, ballast soundings and the ship's hydrostatics into the cargo figure, with trimming, strength, cargo planning, voyage and bunker tools beside it. It works offline on iPhone, iPad and Android.
What it calculates
Eight tools in one chart-room app
Each vessel keeps its own hydrostatic table, hold particulars, tank calibration tables and speed and consumption figures, so every job starts from the ship's own data.
Ballast soundings
Type the sounding in cm; volume and tonnes come from each tank's calibration table, corrected for trim. Tank gauges show how full each tank is.
Trimming
Pour sequence by hold with drafts after every pour, and the final trimming split between any two holds to reach a target trim or cargo quantity.
Stability
Shear force and bending moment along the ship for the initial, intermediate and final condition, against harbour or seagoing limits.
Cargo to load
From the voyage instruction: load line, port and channel drafts, densities, bunkers and hold space give the quantity to load and the split per hold.
Loading sequence
Step through each hold and deballasting tank and see drafts, trim, air draft, shear force and bending moment after every step.
Voyage and bunkers
Legs, distances and chosen speeds give sea time and ETAs; fuel use, the bunker stem with safety margin, and a fuel tank table up to 85 % and 90 %.
Report and tools
A survey report you can print or save as PDF, plus air draft, new draft after a density change, and weight and stowage factor conversions.
See it on the phone
Built for the ship, not the office
Works offlineEverything runs on the device. No signal needed at anchor or alongside.
No account, no trackingVessels and jobs stay on your device. Nothing is sent to us or anyone else.
Your figures, your tablesPaste hydrostatic and sounding tables straight from Excel.
Report ready to signPrint or save the survey report as PDF, with surveyor and master signature lines.
Figures are calculation aids. Check them against the ship's approved stability booklet and loading computer.