ClearShip – Sailing & Boating

ClearShip is your Swiss Army knife for sailing and boating – anchor alarm, emergency assistant, navigation and sailing tools, a nautical dictionary and boat management in one app. Built for the deck: big numbers, glove-friendly controls, works without reception.

⚓ ANCHOR ALARM
Drop your anchor point and set the swing radius – or let ClearShip calculate it from chain length, depth and boat length. ClearShip watches your position, even in the background: early warning first, then the full alarm.
• Correct the anchor position on the chart afterwards
• Silence alarms (30 min to 8 h) – the watch keeps measuring
• Warning on GPS loss – never a blind anchor watch
• Offline maps and nautical chart overlay for the anchorage
• Shared anchor watch for the whole crew
• Boat GPS via Signal K: watches the boat, even while you are ashore

🆘 EMERGENCY & MAYDAY
Step by step through Mayday and Pan-Pan radio calls – with GPS position, boat name, MMSI, persons on board and type of emergency. Read aloud on demand, NATO phonetic alphabet built in.

🧭 NAVIGATION & SAILING
• Compass & GPS – heading, position, speed
• OpenSeaMap – nautical chart; tap buoys, lights and wrecks for details
• Navigation calculator – course, leeway, current triangle, ETA
• Wind triangle, VMG calculator and laylines
• Sail trim – simulator, telltales and trim recommendations
• Anchor calculator – rode length and scope
• Wind and unit converters
• DWD weather charts
• NMEA 2000 reader for your WiFi gateway
• Notepad – stored only on your device

📖 NAUTICAL DICTIONARY
500+ sailing terms in 8 languages – English, German, French, Italian, Spanish, Dutch, Croatian and Greek. Search in any language, 13 topics, with pronunciation, fully offline. Perfect for chartering abroad.

🎲 OFF WATCH
Six offline mini games for quiet hours: Berthing, Dinghy Slalom, Regatta, Wave Rider, Man Overboard and Stow the Stores. Lookout comes first – the game pauses as soon as you leave the app.

🛥️ BOAT MANAGEMENT
• Tasks – plan and check off maintenance, with photos
• Logbook – voyage entries with position and course
• Checklists – one-time, recurring or seasonal
• Equipment – devices, manuals, maintenance schedules
• Inventory – equipment and spare parts with photos
• Medical kit – expiry dates, minimum stock, storage location, PDF export
• Expenses – track costs, photograph receipts
• Documents – boat papers and manuals, available offline

📡 LIVE DATA & VOYAGES (SIGNAL K)
Connect your boat's Signal K server and see it from anywhere: position, speed, wind, depth, temperature, pressure and battery – with history and trends. ClearShip turns the track into voyages with legs and stops, exportable as GPX. Included in the Skipper and Profi plans.

📶 OFFLINE-FIRST & SYNC
Tools work offline, pinned documents are stored locally, and data syncs once you are back in range. A free account syncs boats, tasks and logbook across your devices and clearship.app. All tools also work without an account.

🌍 English and German, light and dark mode.

Note: The anchor alarm uses your location in the background while it is active. ClearShip is an aid on board – it does not replace a proper anchor watch, official nautical charts or good seamanship. The medical kit is an inventory and gives no medical advice.