DB50:

The Derrick Barge 50 was certainly the flagship of the J. Ray McDermott Gulf of Mexico construction fleet. I was involved with many projects on the "50" during my career. With her massive 4400 short ton lift capacity and ultra flexible dynamic positioning mode, she could handle the smallest to the largest jobs with ease. Here are some photos taken of and from the DB50 over the years.
DB50 photos:
DB50 hook - sling rigup for lift
DB50 hook and block with Versabar rigging
Pump Package Removal - Attach Slings
Pump Package Removal - Set on Cargo Barge