The self release hook is professional device which is used for rescue boat, life rafts. There are 15KN, 21KN, 23KN, 25KN, 31KN, 33KN, 35KN, 37KN available. It is approved by CCS, BV, RINA, DNV-GL, ABS, NK, KR, RS etc in accordance with the SOLAS regulations:
1. MSC.47(66)1996 Amendments of the international Convention for the Safety Of Life At Sea 1974 and MSC.216(82), MSC.317(89)
2. MSC.48(66) the international Life Saving Appliance Code And MSC.218(82), MSC.320(89) IACS/UI/SC267
3. MSC.81(70) Revised Recommendation on Testing Of Life Saving Appliances and MSC.226(82), MSC.321(89)
Mainly Structure:
| Model | Size (KN) | Release Type | S.W.L(KN) | Testing Size(KN) | 2.5 Times Of Testing Load(KN) | 6 Times Of Testing Load(KN) |
| 150-T15 | 15 | Manual Release | 15 | 15 | 37.5 | 90 |
| 250-T25 | 21 | Automatic Release | 21 | 25 | 62.5 | 150 |
| 23 | 23 | |||||
| 25 | 25 | |||||
| 370-T37 | 31 | Manual/Automatic Release | 31 | 37 | 92.5 | 222 |
| 33 | 33 | |||||
| 35 | 35 | |||||
| 37 | 37 |
The operation of the self-release hook must be in accorance with SOLAS requirements. Some time the rescue boat release hook can be same as for liferaft release hook when the ship is equipped with a rescue boat and a suspended liferaft which is connected by four boat cable. When the liferaft(rescue boat) is lowered to about 2 meters from the water surface, the red handle is pulled and the release hook is in unloaded release and the life raft is not out of the hook.
