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New HampshireOffshore Fishing: Ports, Rules and Charters

New Hampshire’s coast is short, with three harbors (Hampton-Seabrook, Rye and Portsmouth) opening onto the Gulf of Maine. This page covers where the grounds sit around the Isles of Shoals and Jeffreys Ledge, what runs by season, and how the rules split at the 3-mile line. It helps you decide where to look and which rules apply; it doesn’t promise fish. The same breakdown exists for other U.S. coasts.

By Breakpoint Team
Map of the New Hampshire coast with its offshore ports marked
3Offshore ports
3Stretches of coast
3 NMState waters

The coast

How the coast fishes, south to north

Because the coast is short, every harbor reaches the same three tiers of ground: the Isles of Shoals close in, Jeffreys Ledge farther out, and further-offshore banks beyond.

Hampton-Seabrook Harbor sits in the south, nearest the Massachusetts line. Rye Harbor is in the middle, and the Isles of Shoals lie about 5 to 6 miles offshore of Rye. Portsmouth, New Castle and the Piscataqua River form the north end, with Great Bay upriver.

The Isles of Shoals are the close ground. Ledges surround most of the islands, and the water straddles the Maine line, so Maine waters follow Maine rules. Anderson Ledge uncovers 4 feet, is buoyed, and lies about 1 mile east-southeast of Isles of Shoals Light. A naval target area is centered on Shag Rock off the east side of Duck Island.

Jeffreys Ledge is the main offshore ledge, reached from all three harbors. Tillies Bank is further-offshore ground beyond it. These grounds are part of the wider Gulf of Maine and Northeast run.

Fog is common in the Gulf of Maine. Check the National Weather Service marine forecast and the offshore buoys for wind, wave height and period before you head out.

Chart Contours show the Jeffreys Ledge edges, and OBS SST shows summer temperature breaks. Chart layers are not for navigation.

Ports

3 ports, 3 stretches of coast

Three harbors serve the coast, each with its own entrance and its own run to the grounds. Tap a number on the map, or a stretch below, to zoom in on its ports.

Pick a stretch of coast

1

1 port

South coast: Hampton-Seabrook

Hampton and Seabrook share one harbor at the southern end of the coast, nearest the Massachusetts line.

2

1 port

Middle coast: Rye

Rye Harbor is a small breakwater harbor midway up the coast and the shortest run to the Isles of Shoals.

3

1 port

North coast: Portsmouth and the Piscataqua

Portsmouth, New Castle and the Piscataqua River form the north end, with Great Bay upriver.

Seasons

What runs through the year

What tends to be around each season. Open seasons are covered under Regulations.

Spring

Offshore

Haddock closed in March, reopens after; Cod Spawning Protection Area south of the Isles of Shoals closed April through June

Nearshore

Stripers, no closed season in state waters

Summer

Offshore

Bluefin; blue, thresher and porbeagle sharks; haddock

Nearshore

Mackerel, bluefish, stripers

Fall

Offshore

Bluefin; cod retention window (see GARFO); haddock

Nearshore

Stripers

Winter

Offshore

Haddock (closed in March); pollock open all year

Nearshore

Stripers, no closed season in state waters

Groundfish, bluefin and sharks fill the offshore calendar, while stripers, mackerel and bluefish work the nearshore water.

Groundfish seasons change by season or quota, so check GARFO before every trip.

Seasons tell you which fish are around, and daily water conditions show where to find them

Temperature breaks and color edges shift with wind and current. In Breakpoint, these three layers show those edges and the bottom structure near them.

OBS SST layer in Breakpoint
OBS SSTTemperature breaks
Chlorophyll layer in Breakpoint
ChlorophyllColor edges
Chart Contours layer in Breakpoint
Chart ContoursBottom structure near the edges

Clouds block satellite SST passes, so some days show gaps. Chart layers are not for navigation.

Charters and tournaments

Charters, party boats and tournaments

NH Fish and Game defines a charter boat as one that takes 6 passengers or fewer for a set fee. A party boat carries more than 6 and charges per person.

Passengers fishing from a licensed charter or party boat need no state license. Cod and haddock rules can differ for private and for-hire boats, so know which one you are on.

Party and charter boats sail from Hampton-Seabrook and Rye. Charters also run from Portsmouth.

Two tournaments anchor the calendar:

  • Granite State Tuna Pro Open – fishes out of Seabrook.
  • Striper Cup – a season-long catch-and-release format.

Schedules, fees and entry details come from the organizers, and the On The Water tournament calendar lists current events. Tuna events require the federal HMS permit, and striper events are state-waters fishing. Both sets of rules follow below.

Regulations

State rules apply out to 3 nautical miles, with federal rules beyond

Full state and federal limits are on our New Hampshire regulations page.

New Hampshire offshore fishing splits at 3 miles: state waters run 3 miles from shore, and federal waters run from 3 to 200 nautical miles. NH Fish and Game Marine Fisheries Division sets state rules, and NOAA Fisheries GARFO sets federal groundfish rules. Where state and federal rules both apply, the more restrictive one governs.

Striped bass show the split clearly. They are legal inside 3 miles and closed beyond it.

State waters (0 to 3 miles)

The NH Fish and Game marine rules cover everything inside the 3-mile line.

  • Circle hooks are required with bait for stripers, sharks and bluefish.
  • Shortfin mako are closed to possession.
  • The striped bass slot is set through ASMFC and changes, so check NH Fish and Game before you fish.
  • Isles of Shoals water straddles the Maine line, and Maine waters follow Maine rules.

Federal waters (3 to 200 miles)

GARFO sets groundfish rules beyond 3 miles. Cod, haddock and pollock sizes, bags and seasons change by season or quota, so check the NOAA recreational groundfish rules before every trip.

  • Striped bass are closed in federal waters under the federal striped bass closure.
  • Private and for-hire rules can differ for cod and haddock.

Licenses and permits

  • A NH recreational saltwater license is required at age 16 and older. Fees are on the NH Fish and Game page.
  • Passengers on licensed charter and party boats need no license.
  • A NH resident’s license covers Maine and Massachusetts tidal waters.
  • A nonresident holding a valid Maine or Massachusetts saltwater license is covered in New Hampshire.
  • A federal HMS permit is required for tuna and sharks. Apply through the federal HMS permit portal.
  • The bluefin daily limit varies under federal rules, so check HMS before each trip.

Closed areas

The Cod Spawning Protection Area, south of the Isles of Shoals, is closed to fishing and to groundfish possession in April, May and June.

  • State-waters exception: Rod or line in hand, no more than 1 ounce of artificial weight or a single artificial lure of 1 ounce or less, and all cod released immediately.
  • Federal part of the area: No weights or weighted lures.
  • Transiting with groundfish caught elsewhere: Remove hooks and bait from the rods, and gut the fish.

FAQ

New Hampshire offshore, answered

Official answers come from the state wildlife agency and NOAA Fisheries. Check them before you go.

Do I need a fishing license on a New Hampshire party boat?

No. Passengers on licensed charter and party boats need no license. Anyone 16 and older fishing on their own needs a NH saltwater license from NH Fish and Game.

What is the difference between a party boat and a charter?

NH Fish and Game defines a charter boat as one carrying 6 passengers or fewer for a set fee. A party boat carries more than 6 passengers and charges per person. Both are licensed by the state.

Can I keep cod in New Hampshire?

It depends on the season, the quota and whether you are on a private or for-hire boat. Check GARFO and NH Fish and Game before you go. Our New Hampshire regulations page points to both agencies.

Do I need an HMS permit for bluefin tuna?

Yes. A federal HMS permit is required for tuna and sharks. Daily limits vary under federal rules, so check HMS before each trip.

Can I fish for striped bass past 3 miles?

No. Striped bass are closed in federal waters and legal only in state waters. Circle hooks are required when you fish with bait.

Which port is closest to the Isles of Shoals?

Rye Harbor. The islands lie about 5 to 6 miles offshore. The Shoals water straddles the Maine line, so Maine waters follow Maine rules.

What is the Cod Spawning Protection Area?

It lies south of the Isles of Shoals and is closed to fishing and groundfish possession from April through June. State waters allow rod or line in hand with 1 ounce or less of artificial weight, and all cod must be released. Groundfish caught elsewhere must be gutted with bait and hooks removed when transiting.

Does my Maine or Massachusetts license work in New Hampshire?

For nonresidents, yes. A valid Maine or Massachusetts saltwater license is covered in New Hampshire. A NH resident’s license covers Maine and Massachusetts tidal waters.

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