If anti-2-block horn sounds while operating crane, stop crane and make sure WARNING
light on anti-2-block is lit. Position HORN ON/OFF switch to OFF. Then troubleshoot as
discussed in manufacturer's service manual in Appendix B.
Bow crane's control valve system has built-in pressure relief valves that protect various
hydraulic components in the event the crane is overloaded. In case of overload, boom
begins to drop at a slow rate. Correct overload condition before continuing lifting
When ready, release tension on three tiedown straps on each side of cradle and station crewmembers on control
lines. Using crane winch, lift boat about 6 inches vertically from cradle.
If all is under control, unhook three tiedown straps on each side of cradle.
Crewmembers and workboat must never touch VHF/FM antenna mounted outboard of
starboard railing. Antenna may contain high voltages that will seriously injure
In moving workboat with crane, workboat and crane must never pass over
crane operator or other crewmembers.
Lift boat vertically, using winch, to clear all items on deckhouse top and slew crane in a counterclockwise
direction to move boat over starboard side.
Keep control lines tight to control boat during movement.
Slowly lower boat into water, keeping harness taut to maintain control of boat until it is secured to the barge.
Lower crane winch hook, remove lifting harness ring from hook and from three eyes on workboat. Store harness
under port passenger seat in workboat cabin. Free control lines and store with lifting harness.
If bow crane is left in unfolded position, apply a light coat of grease or hydraulic fluid to
all exposed chromium plated parts of crane hydraulic cylinder system. Wipe this coating
clean before using the crane. If crane must be left unfolded, exercise it daily.
Workboat recovery procedures
To recover the workboat, reverse the deployment procedures provided above.
Prior to starting recovery, perform all after operation checks and inspections on workboat as discussed in
paragraph 2-16, TM 55-1930-209-14&P-17, and complete any scheduled maintenance services as indicated in
paragraph 2-23 in TM 55-1930-209-14&P-17.
Raise outboard drive to full UP (TILT) position.
Fold down radio antenna, spotlight, and anchor light mast flat with cabin top.
When boat is in its cradle and the three tiedown straps on each side have been fastened to boat and pulled tight,
remove two seawater drain plugs and store them under operator's seat in the cabin.
Remove marine radio and depthfinder and store in barge dayroom. Turn spotlight face down toward cabin roof.
Store diving ladder and life ring buoy with rope and light in cabin. Secure cabin.