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Spot & seafloor map — Portsmouth

About the Portsmouth dive map

Portsmouth (United States). Points on the map: 4. Protected / no-take zones nearby: 2. Live go/no-go sea-conditions forecast, spot by spot.

Entry points

  • Isles of Shoals — Gosport Harbor Entrance Ledges
  • Fort Constitution / New Castle Harbor-Mouth Ledges
  • Fort Stark (Jerry's Point)
  • Great Island Common

Rules — protected zones nearby

Spearfishing is banned or restricted in these nearby zones — check the exact boundary on the map before diving:

  • Portsmouth Naval Shipyard Restricted Areas 1 & 2 (Piscataqua River) — restricted · 2 km
  • Duck Island (Isles of Shoals) Naval Aircraft Bombing Target Danger Zone — restricted · 15 km

More on this coast

  • Portsmouth spearfishing forecast