Your boat
Pick a model close to yours to fill the hull and engine numbers, then correct cruise speed and a known fuel burn. Fuel, range and ETA estimates come from these.
Multi-day rules
Used when the trip has overnight stops. Each day the planner scans departure hours, picks the best-graded window, holds a weather day when nothing is under NO-GO, and moves on.
Hull & engine (hull speed · gph)
Burn at any speed comes from a planing power curve scaled to your known burn point. Speed vs rpm is anchored at idle, hull speed, and your WOT reading.
Speed curve, idle to WOT
Key operating points
Trip builder · stops & waypoints
Tap Add on map then tap the water to drop waypoints, or use Add as stop in any marina popup. Drag a point to move it. Mark overnight stops with ⏾; legs split there.
Routes, tracks and waypoints from Navionics, Garmin, OpenCPN, Google Earth, or a chartplotter. Tracks are thinned to about 60 points; the shape is kept.
Export / import JSON
Along the route
NWS alerts
No forecast yet. Pick a route, then Get forecast on the Plan tab.
GoCautionNo-go
No forecast yet
Wind field (arrow color): 0 8 17 22 28+ kn · sampled at the mid-passage hour
Verified marinaOSM marina
