5b98ab6c-42a0-5584-8cbb-cf5f15864060 · no UN/LOCODE · North America

Nantucket Boat Basin

Nantucket, United States · 41.285°N 70.097°W

SUPERCOORDINATEDOPERATIONAL

A short, expensive, fog-and-reservation harbour. The basin is the town. Off-island weather windows, ferry wash and a July–August closed list define the place.

Live channels · not a chart · not a reservation

Estimate

Clear at 2026-08-26T20:15 America/New_York. Wind 3 kn from SSW, gusts 6 kn. It is after local sunset. If this harbour publishes a night-entry restriction, treat it as active until sunrise. Model significant wave 0.5 m from S — coastal model, not a harbour sounding. SST 22.3 °C. Next published low 2026-08-26 05:29 (NOAA CO-OPS).

Wind: 3 kn SSW
Gusts: 6 kn
Waves: 0.5 m
Twilight: Night

Max LOA

65 m

Reported

Max draft

3 m

Reported

VHF

Verified

August band

VERY_HIGH

Estimate

Busy-time intelligence

August: historical occupancy estimate 99% (ESTIMATED). VERY_HIGH July–August Drivers: New England August; tiny island inventory. Fog and ferry schedules can strand a perfectly reserved yacht on the mainland. This is an estimate derived from declared inventory and seasonal demand, not a live sensor count or a passenger-style headcount.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Explainable reliability

No harbour score. Each metric says why.

Seasonal berth pressureVERY_HIGHEstimate
- New England August
- tiny island inventory
Climatology derived from declared inventory and seasonal demand — labelled estimate

Observation foundation

OCCUPANCY_RATIOCLIMATOLOGY · ratio · estimate label required
ARRIVALS_PER_HOURHISTORICAL · calls/h · estimate label required
WINDCLIMATOLOGY · kn
TIDE_HEIGHTCLIMATOLOGY · m

Emergency

Nantucket Cottage Hospital; Boston for major trauma

Medevac accepted (REPORTED)

Sustainability

Pump-out yes · shore power preferred yes

Hours

07:00–20:00 in season

Night watch yes

Run vessel feasibility Compare this harbour Live JSON