YO-257 is a sunken Navy oiler off Waikiki, now an artificial reef teeming with life. This wreck dive offers swim-throughs and historical intrigue, perfect for advanced divers.
Difficulty
Advanced
Max Depth
30m
Type
Boat
Typical Visibility
30m
Conditions Summary
Best time today
11AM - 12PM
GREAT
Best day in forecast
Monday
GOOD
2026-03-09
Community-reported visibility
n/a
Warnings for today
High waves expected
Strong surge expected
Strong winds expected
High bacteria levels due to recent heavy rainfall
Rain expected - bacteria levels may increase
South-facing wreck site exposed to south swells, creating surge at depth. Protected from trade wind chop. North and west swells have minimal impact. Heavy submarine traffic demands careful ascent with surface marker.
