| Summary: | 碩士 === 國立臺灣海洋大學 === 商船學系 === 102 === The purpose of lifeboats being onboard vessels is to insure the safety and security of the crew in disastrous situations, but in the routinely release and retrieval of lifeboat drills, accidents caused by mechanical reasons have constantly been happening, resulting in tremendous casualties over time. This thesis uses initiative detection of whether the release hook is in proper place or not to solve the common problem of accidentally disengagements when under load for open lever type broadside lifeboats.
There have been over 70 different types of lifeboat release hooks developed until now, each differing greatly from one another. This study analyzes the information of these different release hooks and categorizes them. In regard to open lever type broadside lifeboats, the motorizing system in principle, uses 3 Inductive Proximity Sensor sets which are installed in the fore, aft lifeboat release hook and the hydrostatic release device. The motorizing system utilizes light panels to show whether current conditions are safe or not, if the main light signal displays a green light, then this means that the release hook(s) is (are) in correct positions, and if the light signal displays a red light, then this means that the lifeboat may be in contact with the water. When the release hook leaves the water and is not in the proper locked position, then flashing red lights and alarm (audio) signals will be set off; After analysis for enclosed lever type lifeboats, this monitoring system cannot currently be installed for them. But since the LSA Code states that: the crew members should be able to directly observe the activities of release hook systems/components in lifeboats, the enclosed lever type is of question of whether it is in compliance with this requirement, thus providing not much of a concern in this thesis. For free fall lifeboat types, this study shows that the monitoring system of this thesis can be directly used.
This thesis hopes to change current lifeboat accidental prevention measures for the world, and leap out of traditional thinking. To not only use methods of improving the life boat structure itself or additional add-on locks to prevent disasters, but to use electronic monitors to solve this problem, achieving safety and security of the life and property of the crew. The thesis results of this thesis and such concepts can be provided for the International Maritime Organization, surveyor associations, manufacturers, and other lifeboat related business to improve the safety of lifeboats.
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