U.S. NAVY SALVAGE REPORT DEEPWATER HORIZON ... - ESSM

Deepwater Horizon Oil Spill Response
Dive No. Date Bottom Time
Mission
(Hrs:Min)
1 9/29 7:37 Mapped pontoons NE sponson leg and N-S Riser
2 9/29 5:36 Mapped remaining extremes of DWH Structure
3 9/29 8:48 Deployed acoustic tracking beacon and located bridge house
4 9/30 3:48 Inspected interior of bridge house with Xbot
5 9/30 4:32 Surveyed top of DWH pontoons, attempted to reach moon
pool with Xbot
6 10/1 11:18 Surveyed all reachable exposed surfaces of DWH, recovered
acoustic beacon for reprogramming
7 10/1 14:21 Debris field mapping
8 10/2 0:0 Dive Aborted, sonar malfunction
9 10/2 2:29 Second xbot inspection of bridge structure
10 10/2 1:40 Verified positions & range and bearings between key items
on seafloor
11 10/2 6:14 Final debris survey
Total Bottom Time 66:38
Table 5-3. Video Survey Dive Table
5-27