CertCop vs Mariner's Draft Survey

CertCop is a practical document manager for seafarers. Keep your maritime certificates, passports, visas, medical documents, tanker certificates, sea service records and contract readiness details in one clean app. Designed for working crew, CertCop helps you stay ready before joining a vessel, renewing documents, or sending your certificate list to crewing. Key features: • Store maritime certificates and document details • Track expiry dates and remaining validity • Mark required documents for contract readiness • Attach certificate scans locally • Manage sea service history • Track current onboard/vacation status • Export clean PDF reports • Back up and restore app data with iCloud Your data stays under your control. Certificate scans are stored locally on your device and are not uploaded automatically. CertCop is built for seafarers who need a simple, fast and reliable way to keep their documents organized.

Mariner's Draft Survey is the draft survey and cargo planning app for bulk carrier officers. Built by a Chief Officer, it works from your own ship's tables and shows the working behind every figure, so you can check the calculation, not just trust it. DRAFT SURVEY • Six drafts, forward, midships and aft, port and starboard, on a ship diagram • Corrections to the perpendiculars, mean of means, trim, list and hog or sag • Hydrostatic interpolation from your vessel's own table • First and second trim corrections, and the dock water density correction • Ballast, fresh water, fuel and other deductibles from your sounding tables, with trim and list corrections • Net cargo by difference, with lightship and constant • Tap any figure for its formula and the numbers that went into it • A signed PDF report with your company's name and logo STOWAGE AND LOADING • Stowage Plan: share the cargo between the holds for the trim you want, loading or discharging, with a second cargo or on top of cargo already aboard • Sequence Plan: pours and ballast steps the terminal can work, with trim checked at every step • Manual Stowage: when the stow is already decided and you just want the sheet • Trimming Calculator and Grab Counter: the last tonnes for the final trim, counted grab by grab, with an ETA for each hold • Hatch by Hatch: a fair figure per hold when the shore figures don't add up to your survey CARGO VOYAGE PLANNER • How much she can lift, and which limit sets it • Every limit on the passage in one answer: load line zones and seasons, channel depths with your under-keel clearance, berth drafts and air draft under bridges • Load lines checked by displacement and at the mark amidships, using your certificate FWA • Fuel, water and endurance to every waypoint, with ECA and port rates • Enter the drafts and figures measured at any port, and the rest of the voyage is worked from them • A passage plan report to print or share AT THE SHIP'S SIDE • Draft Reader: read the marks off a photo when you can't read them by eye • Heel Meter: work out the seaside draft you can't read from the heel and the side you can • Ballast Watch: live pumping progress from your soundings, with finish times and alarms • Conditions: drafts in new water, and the most she may load in any zone YOUR VESSEL, YOUR DATA • Import hydrostatic and tank tables from Excel or CSV, and keep a profile for each ship • Each ship keeps her own survey and plans; history is listed by vessel • Back up everything to one file, and restore it on a new phone • No account, no sign-up, no ads and no tracking. Works fully offline, and nothing leaves your phone. A full user manual is built in, and at marinershandapp.com/draftsurvey. Planning tools are an aid to the officer's own calculation and judgement: check every figure before loading.