Navy Tug

Lying off the west coast of Oahu in the waters near Pearl Harbor, the Navy Tug is an advanced wreck dive that rewards dedicated divers with an intimate, coral-encrusted experience in the warm, clear waters of Hawaii's military coastline. This decommissioned United States Navy tugboat was deliberately sunk as an artificial reef after years of service, providing a hard substrate for coral colonization and complex habitat for the diverse marine life of Oahu's south shore. The tug rests upright at approximately 90 to 100 feet on a sandy bottom, its compact profile — compact relative to the massive barges that share these waters — lending the dive a more intimate character than sites like the Sea Tiger or YO-257. The superstructure, pilot house, and deck machinery are thoroughly overgrown with corals, sponges, and encrusting organisms, the vessel's working identity softened by years of biological transformation into something more purely reef than ship. Bluestripe snapper and goatfish patrol the hull in loose formations, while larger grouper and jack occasionally materialize from the blue water column. Moray eels are a constant presence, their heads protruding from cavities in the coral-encrusted deck fittings. Whitetip reef sharks are frequently spotted resting against the hull or on the open sandy bottom surrounding the wreck — a dramatic and reliably encountered highlight of this location. The dive is appropriate for advanced divers comfortable with depth management and neutral buoyancy in open water conditions. Slight currents are occasionally present and can shift unpredictably on this part of Oahu's coast, making boat-based diver pickup important to coordinate carefully with your captain. Access is by boat from Honolulu-based operators. Given the proximity to Pearl Harbor and the military significance of the entire southern Oahu coastline, the Navy Tug carries a weight of historical context that adds a particular resonance to the experience of drifting above its coral-draped deck in the warm Hawaiian swell.