dlnr.hawaii.gov · Official
State artificial-reef map for the Waianae reef area.
Dive Spot Guide•
The Mahi (Wreck)
The Mahi (Wreck) is a west Oahu boat wreck off Waianae.
Local operator required
Boat access from Waianae is the normal way to reach the site.
Boat-only west-side wreck with a conservative outside route; best for experienced divers on calmer days.
About The Mahi (Wreck)
The Mahi (Wreck) is a west Oahu wreck dive on a former Navy minesweeper that now serves as an artificial reef off Waianae. Divers stay outside the structure and work the deck, rails, and surrounding sandline for a deliberate wreck tour rather than a penetration dive. It is a boat-only site with more planning overhead than a harbor reef, so calmer seas and a controlled descent matter. The wreck draws steady fish life and is a good fit for experienced divers who want a classic west-side charter day.
•
Research Estimate At The Mahi (Wreck)
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 24m
AccessChallenging entry effort
Aquatic LifeGreat variety
FacilitiesBasic facilities
Crowd / PopularityModerate
CurrentModerate current
Where Is The Mahi (Wreck)?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
The Mahi (Wreck) Planning Details
Depth range, seasonality, and planning context.
Reported Depth
18m - 29m
Depth Note
Operator and trip-report sources put the wreck roughly in the 18-29 m / 60-95 ft range, with the main structure shallower than the sandline.
Typical Conditions
Open-water wreck conditions with better results when the sea is calm and visibility is up.
Safety & Access At The Mahi (Wreck)
Hazards, restrictions, and access requirements.
Safety Notes
Stay outside the wreck, watch your gas, and treat the deeper profile and changing west-side conditions conservatively.
Local Intel For The Mahi (Wreck)
Community notes to help plan your visit.
Scuba Diving
Stay outside the wreck and treat it as a guided wreck tour rather than a penetration dive. A controlled descent and disciplined air plan matter more than speed.
Recent Logged Visits At The Mahi (Wreck)
Community dive logs and visit reports for this site.
Dive Spot Log Averages At The Mahi (Wreck)
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility24m
Activity
No dive activity logged yet.
