TIDELYNC

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Route
Underway not tracking
Shore contact & vessel card
Saved on this device only. "Send for help" opens a text to your contact with your last fix, course, speed, next waypoint, ETA, and a link to your track. The contact calls the Coast Guard; the app never does.
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.
Export / import JSON
Depart
Multi-day rules
Start date
Earliest dep
Latest arr
Max hrs/day
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.
Cruise
Cruise GPH
—calc
Tank gal
Known
Known GPH
Off plane ft
Boat (hull speed · gph)
Waterline ft
Loaded lb
Total hp
Idle rpm
WOT rpm
WOT
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
arrive
fuel total
max wind / seas
Itinerary
Along the route
NWS alerts
    GoCautionNo-go No forecast yet Wind field: 0 8 17 22 28+ kn Verified marinaOSM marina
    Open-Meteo forecast (3 days single leg, 16 days multi-day) + marine models, NWS alerts, OpenSeaMap marks, OpenStreetMap marinas. Planning aid only; verify waypoints on your chartplotter. Beyond 5 days the forecast is a trend, not a plan. Limits: caution over 15 kn (17 mph) or 4 ft, no-go over 20 kn (23 mph) or 6 ft. Lakes and rivers: wind only.
    water temp