Logbook Scuba Dive # 418 - USS Apogon (SS-308)
| Logbook Scuba Dive # 418 - USS Apogon (SS-308) |
| Date: | Entry Time: | Dive Time: | Max. Depth: |
| Fri, 11-Oct-2013 | 14:30:00 | 56 minutes | 50 metres |
| Dive Location: | City / Island: | ||
| USS Apogon (SS-308) | Bikini Atoll | ||
| Country: | Dive Master: | ||
| Marshall Islands | Brian Kirk | ||
| Dive Charter: | Dive Trip: | ||
| Indies Trader Marine Adventures | Bikini Atoll - Oct 2013 | ||
| Buddy/Buddies: | |||
| Michael Coleman | |||
| Dive Details: | |||
| Entry: | Boat Name: | ||
| Boat | MV Windward | ||
| Start PG: | Entry Time: | Exit Time: | End PG: |
| - | 14:30:00 | 15:26:00 | - |
| Altitude: | Rep. Dive: | Surface Interval: | |
| 0 m | Yes | - | |
| Max. Depth: | Avg. Depth: | ||
| 50 metres | - | ||
| Dive Time: | Deco. Dive: | ||
| 56 minutes | Yes | ||
| Conditions: | |||
| Weather: | Air Temp.: | Water Temp.: | |
| Sunny | 30 °C | 30 °C | |
| Water: | Waves: | Current: | |
| Salt | No Waves | No Current | |
| Visibility: | Horizontal Vis.: | Vertical Vis.: | |
 Good |
- | - | |
| Equipment: | |||
| Weight: | Dive Suit: | Dive Computer: | |
| 0 kg | Wetsuit 3 mm Steamer | Suunto HelO2 | |
| Cylinder Set #1 | |||
| Cylinder Type: | Cylinder Size: | Working Pressure: | Supply Type: |
| Steel |  24 litres |
- |  Open Circuit (OC) |
| O2: | He: | Min. PPO2: | Max. PPO2: |
| 21% | - | - | 1.4 bar |
 Air |
MOD: | EAD: | END: |
| 56.6 m | 56.6 m | - | |
| Start Pressure: | End Pressure: | Diff. Pressure: | |
| - | - | - | |
| Avg. Depth: | SAC Rate: | ||
| - | - | ||
| Avg. Depth: | SAC Rate: | ||
| - | - | ||
| Gas Mixture: | |||
| - | |||
| The USS Apogon was typical of the other 120 Balao-class submarines built between 1942 and 1946. She could operate at a depth of 120 metres (440 feet). The Apogon was launched on 10 March 1943. The Apogon was sunk by an underwater atomic bomb during "Test Baker" on 25 July 1946. She was operated under remote control to position her 30 metres (100 feet) underwater before the explosion. She suffered relatively minor damage from the atomic blast, even though the bomb detonated relatively nearby. There are no apparent holes from the blast. The pressure wave from the test burst open her watertight seals, and very shortly, she filled up and sank. The USS Apogon sits perfectly upright in 50 metres (165 feet) of water on a lifeless sandy bottom. Still, it is a beautiful dive as she is completely covered in whip corals and soft corals, and shrouded in swirling schools of glassfish, which are usually found around the conning tower. Indeed, the shadowy silhouette of USS Apogon's conning tower, completely enveloped by glassy sweepers, is one of the most beautiful sights you'll ever see underwater. We started our Friday afternoon dive on the USS Apogon submarine at the bow, made our way along the starboard side, past the conning tower to the stern. At the stern, you can see an open rear torpedo tube with a loaded torpedo up the spout! Then we made our way back to the bow and ascended. |
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