Depth 70-100 ft/ 22-33 m.  Wreck dive.  One of the most beautiful dives of Hawaii, it has a very rich ecosystem with a lot of corals, aquatic plants, and marine life.  The YO is a perfect dive to do underwater photography and videography specialties.  Since it's not a very deep wreck dive, the diver can enjoy a comfortable dive with a good bottom time.  Like the Sea Tiger, The YO was a Navy Oiler and it was also sank by a submarine company in 1989, but these guys are still active.  On a daily basis you can sea the  Atlantic Submarine cruising by with tourists on the inside waving at you at 80 ft./ 28 m. deep.  The best thing about diving the YO-257 is that you can also see another wreck on the same dive, the San Pedro.  They are only 100 ft./ 30 m. apart. Be careful with the strong currents!  Visibility 60-120 ft./ 20-40 m.