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Boats on sea transport

Boats on sea transport



Cradle or trailer must have configuration strength and size to handle longitudinal and athwart ship load of the boat. Cradle or trailer must be free of rot, splintering, or infestation. Metal should be free of heavy corrosion or cracking. Cradle or trailer hardware must be sufficient in quantity and purpose. Cradle must be effective for fork lifting without damage to the cradle or the boat / yacht.


The boat

Motor, parts and hull must have sufficient ground clearance. Boat / yacht must be lashed / tied to the cradle with materials of sufficient breaking strength. The boat must be lashed at front and rear of boat / yacht.



The sling

Boat lift straps, also called boat hoist slings, are designed to lift boats safely and securely. Boat straps are typically made of polyester because of its low stretch value (3% at working load limit; maintains 100% of working load limit when wet). Nylon boat slings are also available , but nylon’s higher stretch value (6-8% at working load limit; loss of 15% of working load limit when wet) make them a less popular option. Polyester is also superior to nylon in its ability to reduce hull markings and is resistant to acids used to clean the boat's hulls. However, polyester straps should not be used near caustic materials.



An accident

A large boat being loaded onto a larger ocean going cargo ship in Galway harbour, Ireland, was dropped after one of the lifting slings broke. Three men were taken to hospital with non life threatening injuries.
The injured men were aboard the ferry as it was being lifted, why is not clear. The normal practice is that the boat being lifted is evacuated, once the slings are tight. The boat was being lifted by the cargo ship's two cranes in a tandem lift.
The boat, the Clann na nOileain, built for the Aran Island run, was around 11 meters in the air when one of the slings broke, dropping the boat stern first into the water. A minute or two later and the boat would have been over the Danish cargo ship – the Thor Gitta and the men who would have been guiding it in the ship’s hold.

The Clann na nOileain is dropped in Galway Harbour


Rigging and sling failure in harbours appears to happen way too frequently, and all too often when loading unusual loads, such as medium sized boats such as this one

There really is no excuse for such failures. Modern good quality slings are excellent and as long as looked after and maintained will very very rarely fail.

Accidents such as this are invariably caused by poor slinging/rigging caused possibly by an over familiarisation by staff who one has to assume lack the in depth training to sling such loads.

Given the dangers of falling loads, not to mention the costs, this is an area that the evidence suggests needs to be tightened up

This shows the importance of inspecting the rigging and the way it is rigged before EVERY lift even if you have made this lift before and on the same day and should always be mindful of what can happen.

    News Group   :   SafetyAlerts Date    :   2015/08/10 ساعت    :   09:13:59
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