About PNSY - The Back Channel Marina
MWR maintains two marina facilities at Portsmouth Naval Shipyard, Sound Basin and the Back Channel. Rental slips and moorings are available by the season to active duty, retired military and employees of the shipyard. The Sound Basin Marina has 70 slips and 62 deep water moorings and offers a transient pier and peirside water. The Back Channel Marina has 68 slips and 18 deep water moorings and offers a transient pier and pierside water and electricity.
Facilities
Electricity
WaterCOORDINATES
43.08249 N, -70.73331 E
Port Information
Telephone
Depth at MLW
2 - 3m
Manoeuvrability
Fair
Channel Marking
Fair
Port of Entry
No
Overseas Visitor Berths
Yes
Dock Type
Floating
Style Stern To
Yes
Tidal Flow
Beware
Weather Forecast
Thu
5AM - 9AM
19 February 2026
Light and variable.
Increasing from −8 to −4°C
E 0.8m at 8s period
UV Index: 0 - Low
Mostly fine
Thu
9AM - 1PM
19 February 2026
- Light and variable.
- Increasing from −2 to 1°C
- E 0.7m at 7s period
- UV Index: 1 - Low
- Mostly fine
Thu
1PM - 5PM
19 February 2026
- Light and variable.
- −1 to 1°C
- E 0.5m at 6s period
- UV Index: 0 - Low
- Partly cloudy