|
When I was Chief Engineer on a harbor tug boat 2000 shp and a 12 foot screw, we had to remove the screw for balancing. The divers used a really big box wrench hooked to a crane to loosen the nut, then used det cord to break the screw loose from the shafting. I was told that it was a very common procedure for breaking large screws loose. Worked just fine for us and no dry docking was needed.
Later, Don
|