Portable Davit Rescue System with Quick-Release Mounting
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Solution Overview
Problem
Existing water rescue systems lack a portable and efficient means to quickly attach and detach from a ship or dock, making it difficult to perform effective rescues without straining the rescuer and often requiring them to lift the victim.
Innovation Solution
A portable lift system utilizing a davit and hook-and-loop system that can be quickly secured to a vessel or dock, featuring adjustable components, thrust bearings, and a winch mechanism to lower the davit for easy rescue operations, allowing the rescuer to stay upright and avoid lifting the victim.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated lift system is affixed to a ship, then the rescue operation is stable and reliable, but the system cannot be quickly attached or detached and lacks portability
Solution Approach 1:
The rescue system is divided into separate modular components including a davit assembly, a lift system, and attachment mechanisms that can be independently assembled and disassembled. This segmentation allows the system to be quickly deployed and removed while maintaining operational reliability when assembled.
Solution Approach 2:
The system employs dynamic attachment mechanisms including adjustable feet that can adapt to different bitt configurations, and a davit gate system that enables quick lowering and raising of the davit. These dynamic features provide the stability of a fixed system when needed while maintaining portability when not in use.
2Ease of manufacture
If the rescuer manually lifts the victim, then the rescue can be performed with simple equipment, but the rescuer experiences back strain and physical exhaustion
Solution Approach 1:
The manual lifting action is replaced by a winch-based mechanical lifting system. The winch winds the lift line to raise the victim, converting the rescuer's rotational hand motion into vertical lifting force through mechanical advantage, thereby eliminating back strain while maintaining operational simplicity.
Solution Approach 2:
The davit positioning system allows the rescuer to lower the davit to an ergonomically optimal height, creating an equipotential working condition where the rescuer can operate from a stable standing position without excessive bending or lifting, reducing physical strain while maintaining simple equipment operation.
3Reliability
If the davit is positioned high for stable mounting, then the attachment is secure, but the rescuer cannot easily place the rescue strap around the victim
Solution Approach 1:
The davit is designed with a lowerable mechanism that allows it to be positioned high for secure mounting during storage, then quickly lowered via the davit gate system and winch operation to an accessible height during rescue. This dynamic positioning maintains both attachment security and operational accessibility.
Solution Approach 2:
The system prepares the davit in a raised, secure position for stable mounting and storage. When rescue is needed, the davit is quickly lowered to the working position, and the rescue strap is pre-positioned on the davit, allowing the rescuer to simply deploy it without complex manipulation.
Data Source
AI summary
A man overboard system may a main body 200 with the main body quickly and easily being attached and detached to a ship's bitt a deck bitt and/or a flat mount system, with the flat mount system attached to a ship, pier or other object. Thus, the system is very portable and may be quickly set up prior to departing and quickly put away at the end of a voyage. The system allows for the fast and efficient rescue of a person overboard without need for a rescuer to enter the water or to risk bodily injury in retrieving a person in the water. The system provides secure mechanical means allowing for a winch to be used in the support of a person which is a significant departure from the prior art.