A Japanese crane vessel, the Kaisho also features among the world’s biggest floating cranes’ list. The Kaisho biggest crane has a hoisting capacity of 4,100 tonnes. Although referred to as sheerleg, the crane vessel is famous for lifting extremely heavy loads across seas.
There are a couple of differentiating aspects between sheerlegs and the other crane vessels, starting with their lifting methodologies.
Cranes equipped on crane vessels can be rotated irrespective of the ship’s position and direction while the cranes affixed on sheerlegs can be operated only in the direction of the ship’s placement.
The second highlighting difference between the two crane ship variants is their hoisting capabilities.
Sheerlegs can hoist loads up to a maximum of around 4,000 tonnes while the other floating cranes can lift anywhere up to 10,000 tonnes easily.
Thialf and Saipem 7000, the two biggest crane vessels in present times, have hoisting capabilities of 14,200 and 14,000 tonnes respectively.
The Kaisho largest floating crane is mainly utilised for the purposes marine constructional activities. In addition, the crane ship is also utilised for salvaging activities and simple cargo handling.