Convert between nautical miles, knots, fathoms, and metric units instantly. Essential for navigation, depth readings, and speed calculations.
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Works offline on board where there is no signal, next to the anchor alarm and your boat's maintenance tasks.
More about the appRegister for ClearShip to manage boat maintenance, tasks, checklists, inventory, and collaborate with your crew - plus access all sailing tools.
Wind speed and Beaufort scale
NATO alphabet and text converter
Interactive nautical charts
European weather and wind maps
Sailing optimization guide
True and apparent wind, visualized
Optimal upwind and downwind angles
Port and starboard tack laylines to a mark
Distress call generator
Course conversion, leeway, and current triangle
Nautical miles and course between positions
GPS position in degrees, minutes, seconds
Calculate anchor rode length and scope
IMO FAL Form 5 crew list generator
Draw your boat layout with boat symbols, export as SVG