Hi,
Subic is a fantastic diving location, with most of the wrecks and reefs within 10 minutes speedboat from the SBMA beach.
The main dive sites are:
USS New York - 32m
Seian Maru - 28m
Landing Craft Utility - 22m
Japanese Patrol Boat - 24m
El Capitan freighter - 22m
Landing Ship Tank - 34m
San Quentin - 16m
Barges (sunken dock) - 5-32m
Canyons Reef - 6-30m
Nabassan Reef - 6-25m
Most dive centers run a 2-dive am and.or pm trip to these sites, but the short transit times make your diving options very flexible.
I manage a PADI 5* Dive Center/IDC here in SBMA, Subic, and would be happy to provide you with prices and more details (PM please). It would be easy to put together a diving schedule to meet your requirements. I can also source accommodation, at a discount, if you require.
Many thanks,
Andy