In response to Pork Chop Express's nice story on https://www.sfbaysss.org/forum/showthread.php?2869-2023-Corinthian-SIs-are-now-posted-on-jibeset, the USNS GRASP, currently visiting San Francisco at Pier 32 is an astonishing ship.
GRASP is the second ship of the newest auxiliary rescue and salvage class of vessels constructed for the US Navy. At 255 feet LOA, this rugged steel-hulled vessel, combined with speed and endurance, make GRASP well-suited for rescue and salvage operations throughout the world. The hull below the waterline is ice-strengthened.
In her hold, GRASP carries transportable cutting and welding equipment, hydraulic and electric power sources, and de-watering gear. GRASP has salvage and machine shops, and hull repair materials to effect temporary hull repairs on stranded or otherwise damaged ships.
Stranded vessels can be removed from a beach or reef by the use of GRASP's towing winch and propulsion. Additional retraction force can be applied to a stranded vessel through the use of up to six legs of beach gear, consisting of 6,000 pound STATO anchors, wire rope, chain, and salvage buoys.
In addition to the standard legs of beach gear, GRASP carries 4 spring buoys carried beneath the port and starboard bridge wings. Each spring buoy weighs 3100 pounds, is 10 feet long, 6 feet in diameter, and provides a buoyancy of 7½ tons, The spring buoys can be used with beach gear legs rigged from a stranded vessel when deep water is found seaward of the stranded vessel like on the back side of Red Rock during the 3BF.
GRASP's propulsion machinery provides a bollard pull (towing force at zero speed and full power) of 68 tons using a double-drum automatic towing winch. Each drum carries 3,000 feet of 2.25 inch-diameter, galvanized, wire-rope towing hawsers. The towing winch has automatic pay out strain adjustment, and can also be used with synthetic rope, ideal for towing the entire E-27, Wabbit, and Moore-24 fleets to the start line off GGYC.
GRASP has several diving systems to support different types of operations. Divers descend to depth on a stage that is lowered by one of two powered davits. The diving locker is equipped with a double-lock hyperbaric chamber for recompression after deep dives or for the treatment of divers suffering from the Bends. GRASP's diving system supports manned diving to depths of 190 feet on surfaced-supplied air. A mixed gas system can be used to enable the support of diving to a maximum depth of 300 feet. GRASP carries SCUBA equipment for dives that require greater mobility than is possible in tethered diving. Perfect for Rob on TIGER BEETLE.
In addition to her two main ground tackle anchors (6000 pound Navy standard stockless or 8000 pound balanced-fluke anchors) GRASP can use her a 7.5-ton capacity boom on her forward king post and a 40-ton capacity boom on her aft king post. As well, there is a heavy lift system that consists of large bow and stern rollers, deck machinery, and tackle that can lift up to 350 tons and/or the Richmond Yacht Club clubhouse.
GRASP has three manually operated fire-fighting nozzles that can deliver 1,000 gallons/minute. Good for celebrating RAINBOW's departure and return from the South Pacific.
If you need a pull, lift, dive recovery, fire suppression, Alcatraz reanchored, or race mark repositioned, GRASP is the ship for you.
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