Ships – Anchoring arrangement
Patent
1976-05-19
1977-05-03
Blix, Trygve M.
Ships
Anchoring arrangement
114230, B63B 2150
Patent
active
040207790
ABSTRACT:
An anchor-deploying structure and method particularly adapted for anchoring an offshore drilling platform employs the use of an anchor, anchor chain and wire rope combination. Separate reeling and storage means are supplied for the wire rope and anchor chain, the wire rope being carried on and deployed from a winch-driven drum and the chain being carried in a chain locker and deployed from and returned to the chain locker by a chain hoist. At the end of the wire rope is a connector which carries a short length of leader chain which may include a swivel. A work station is so located that workmen thereon have access to both the leader chain and a length of lead chain from the chain locker, either of which may be connected to the anchor chain through the use of a special three-way chain link and a pair of removable links. In deploying the anchor, the chain hoist is operated to reel out chain until the special three-way link is at the work platform, at which time a removable link is connected between an unoccupied opening on the three-way link and the leader chain. The chain hoist is then operated to tighten the wire rope line and put slack in the lead chain, thus removing the tension from a second removable link and enabling it to be removed. The wire rope winch is then operated to deploy the anchor to the desired depth. Essentially the reverse of this process is used to recover the anchor and store the wire rope and anchor chain.
REFERENCES:
patent: 3842776 (1974-10-01), Wudtke
patent: 3967572 (1976-07-01), Lea
patent: 3985093 (1976-10-01), Eidem
Blix Trygve M.
Skagit Corporation
Smith Robert C.
Sotelo Jesus D.
Thornton William F.
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