About Great Bay Marine Inc
Founded in 1956, Great Bay Marine is New Hampshire Seacoast’s only year-round, full-service boating facility. Located six miles up the Piscataqua River, we serve Rockingham county, plus surrounding counties and states along the New England Seacoast. This location is ideal for most shopping, grocery, and transportation needs. 128 Slips accommodating 13′ to 70′ LOA Available 30A & 50A Power and Fresh Water Free High Speed Wireless 72 Moorings, Dedicated Dinghy Dock 4 Moorings at Hilton Park for Tall Rig Sailboats Transient Slip & Mooring Availability
Installations
Électricité
EssenceDiesel
Eau
Wifi
Douches
Eaux usées
Toilettes
Recyclage
Sortie d'eauCOORDINATES
43.11636 N, -70.83558 E
Port Information
Téléphone
Berth Sizes
10-20m
Profondeur à la marée basse moyenne
2 - 3m
Manœuvrabilité
Fair
Channel Marking
Fair
Overseas Visitor Berths
Yes
Amarrages pour catamarans
Yes
Type de quai
Floating
Style Side To
Yes
Style Stern To
Yes
Tidal Flow
Negligible
Active Winter
Yes
Weather Forecast
Wed
5AM - 9AM
11 February 2026
SW 3 knots increasing to NW 8 knots. Gusts up to 17 knots.
−2 to 0°C
SE 0.5m at 4s period
UV Index: 0 - Low
Cloudy
Wed
9AM - 1PM
11 February 2026
- NW 8 knots increasing to 11 knots. Gusts up to 19 knots.
- 0 to 2°C
- SW 0.5m at 3s period
- UV Index: 1 - Low
- Mostly fine
Wed
1PM - 5PM
11 February 2026
- NW 11 knots decreasing to 7 knots. Gusts up to 19 knots.
- 0 to 2°C
- W 0.4m at 3s period
- UV Index: 0 - Low
- Partly cloudy