Wreck database entry with depth and identification details.
Salvaged Portland wreck for experienced wreck divers.
Salvaged Portland wreck for experienced wreck divers.
A Portland-area charter is the practical way to hit the slack-water window.
Frogner is a heavily salvaged Norwegian steamship wreck off Portland with broken plates, scattered wreckage and enough structure left to make the dive rewarding. It suits experienced wreck divers who are comfortable dropping on a shotline, working a compact route through the site, and finishing before the slack-water window closes. Large conger, lobster and shoals of fish are the usual bonus.
Conservative baseline from public research. No community dives logged yet.
Depth range, seasonality, and planning context.
Reported Depth
35m
Depth Note
Reported wreck depth is around 35m; the site is a salvaged deep wreck rather than a reef.
Best Season
Most practical in calmer late spring to early autumn weather, but the tide window matters more than the calendar.
Typical Conditions
Short slack-water window, then strong tidal movement; low ambient light and silt can make the site feel dark once the wreck is disturbed.
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
This is a deep wreck dive. Plan a conservative slack-water profile, keep shotline contact, and expect low light and sudden silt-out if conditions turn.
Access Restrictions
Boat access only; plan the dive around a local skipper and a short slack-water window.
Legal Notes
Use the operator's charter and harbour rules for the departure point, and follow the skipper's tide call before entering the water.
Community notes to help plan your visit.
Scuba Diving
Deep wreck dive for experienced wreck divers who are comfortable with slack-water timing, low light and a compact route through broken structure.
Freediving
Not a practical freedive target; the wreck is deep and the timing window is too short for breath-hold exploration.
Snorkeling
Not suitable for snorkelling; it is a deep offshore wreck dive.
Species commonly reported at this site, with direct links into their wildlife guides.
Community dive logs and visit reports for this site.
Average conditions based on logged dives & visits.
Planning answers for access, conditions, timing, and site logistics.
Last Updated
Research Sources
Wreck database entry with depth and identification details.
Local diver page describing the wreck and its marine life.
Portland charter trip context and site access framing.
Community dive report with current and visibility observations.
Official Portland Port page for local dive access context.
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