The cradle then rests on blocks while work is done on the vessel. Dry dock that cannot be moved. A large fork-lift type of equipment that can lift a tug boat, shrimp boat, etc., from the water, travel with it and set it down. The travel lift is removed and can be used elsewhere while the work on the vessel is done. Similar to Railway Dry Dock except that its platform is not supported directly by the ground.
Qualification is every quarter.
It does not include trips to and from offshore areas or fishing areas on the high seas, or trips between two points in the State of Texas. The primary source of support for offshore stationary non-vessel type drilling or production operations. The legs of the jacket rest on the ocean floor and are anchored with steel pilings driven through each leg into the ocean floor, thus making the jacket a permanent fixture. When set in place, the jacket is considered an improvement to realty. The platform or decking is attached to the jacket, and the rig or production package is placed an top of the platform.