Free boat depth & tide map
Free trip planner for sail & power boats: set draft and mast, tap for NOAA ENC charted depth (MLLW) with tide-adjusted go/no-go, live tides, marinas and bridges. Type a model (e.g. Bali 4.6, Lagoon 46, Catalina 425) to auto-fill builder specs when published — then tweak the sliders. Planning only — not for navigation.
Draft 5.5 ft
Safety buffer 2.0 ft
Mast height 54 ft
Beam 22 ft
Length (LOA) 44 ft
Water you need
7.5 ft
Draft + buffer · compared to chart datum (MLLW)
Use my location
Depth here
Snake Creek Bridge
Tide above MLLW (not depth)
Right now Tap map or locate
Next high —
Next low —
This is the tide offset only. Tap the map for ≈ water now (charted band + tide). Live when available; else predicted.
Dredged marina cuts & federal reaches sit on top of flats — USACE corridors use published project depth (tide not added; datum unknown). ENC dredged areas use chart + tide. Width lines = bank-to-bank on ENC fairway/dredged/harbour outlines. Tide scrubber updates ENC ≈ water + UKC. Labels never show negative water — dry/exposed means the shoal edge of that chart band is above water at this tide (basemap may still look blue; deeper parts of the band can still hold water). BlueTopo pilot is NOAA bathymetry (Florida coastal, expanding) converted NAVD88→MLLW via VDatum. Private unmarked canals may be missing. Planning only — not for navigation.