Oceanographic Winches for NARL Vessel

Oceanographic winches are supplied to NARL (National Applied Research Laboratories) from Taiwan for their new Oceanographic “Research V”, which is been building on Jong Shyn Shipyard in Kaohsiung. The main equipment supplied was designed to load 8.500 m of Ø38.1mm cable. It is composed by a constant tension tractor winch. With a pull of 15T and a maximum speed of 80 m/min, which was designed to work with fiber cable, type Technora Aramid.

 

 

For a proper work with this fibre cables, the tractor winch has been designed to work with individual driven sheave. 8 of 11 sheaves are operated by 8 motors in total. Each motor works individually over its sheave. Motors are controlled automatically changing the sheave speed according to the enlargement produced during the cable loading. In this way, cable deformities are absorbed and friction damages are avoided.

 

The traction winch that works completely coordinated with the tractor winch is composed by a grooved drum with capacity for 8,500 m (Ø38.1mm), and by an automatic control to keep the same tension on each of the layers, increasing the speed progressively according to the work layer. A sheave managed by an independent spooling device drives the cable to be loaded.