Operator wreck page with access, depth, and visibility details.
Guam · Guam
SMS Cormoran is a historic deep wreck dive.
SMS Cormoran is a historic deep wreck dive.
Boat access, mooring, and deep-wreck planning make local operator support the normal path.
Deep boat wreck in Apra Harbor where the WWII Tokai Maru and the WWI SMS Cormoran sit side by side. The draw is the combination of history, wreck structure, and macro life: you move along intact hull sections, find coral and tunicate growth, and get a rare chance to visit two historic wrecks in one dive. This is a guide-led wreck dive for experienced scuba planning rather than a casual sightseeing run.
Site Conditions
Safety Notes
Deep wreck environment. Use appropriate training, gas planning, and wreck awareness; follow guide direction around openings and superstructure.
Access Restrictions
Boat access only; this is an advanced wreck dive that should be run with a local operator familiar with Apra Harbor.
Legal Notes
Historic wreck in Apra Harbor; follow harbor and site rules.
Community notes to help plan your visit.
Scuba Diving
A deep wreck dive where two historically significant wrecks can be visited in one dive.
Freediving
Not suitable; this is a deep scuba wreck dive.
Snorkeling
Not suitable; the site is too deep for casual snorkeling.
Species commonly reported at this site, with direct links into their wildlife guides.
Research estimate
Research estimate
Research estimate
Research estimate
Last Updated
Research Sources
Operator wreck page with access, depth, and visibility details.
National Park Service article covering the scuttling and historical context.
Official Guam tourism page for the historic SMS Cormoran dive site.

Tokai Maru is Guam's historic deep wreck.

Deep WWII wreck dive in Apra Harbor for experienced divers.

Outhouse Beach: sheltered Apra Harbor training reef