Kranskan Marine Crane Stability Indicator
A dedicated safety device developed to provide warning of hazardous conditions during marine crane operations
Load indicators should also be fitted to protect the cranes and their mountings from overload. If a winch is fitted, full account must be taken of the change in weight if lifting a submerged load.
The KRANSKAN indicator measures these two parameters, giving an audible and visible indication of the safety margins at the crane controls. Coloured lights and a two-tone alarm on the KRANSKAN indicator warn the crane operator of approach to a pre-determined maximum load moment for the crane or maximum angle of heel for the boat.
The crane operator is therefore fully informed of the twin hazards of overload and over-heel as the lift progresses.
KRANSKAN indicator variants are available for crane applications where the operator sits on the crane structure, allowing continuous 360° rotation.
Fitting a Kranskan indicator allows for the full load capacity of the crane to be used when lifting over the bow or stern of the vessel while heel angle warning restricts the load to be lifted over the side of the vessel. There is no requirement to de-rate the crane for side lifts by reducing the hydraulic pressure.
Hook Marine recognised the need for such a device, given that many boats are not fitted with effective inclinometers to warn of the approach of angles of heel at which the cargo might shift, or capsize occur. Workboats are frequently in their most unstable condition when the deck crane is lifting a heavy load.
Hook Marine Ltd is a Scottish company which is dedicated to safety in the marine industries. The company specialises in the provision of safety equipment for use when lifting or hauling at sea, and the Kranskan™ and SeaWise® products shown on this web site are specially designed to reduce the risks associated with working in a hostile and hazardous marine environment.