The minimum uniform speed (in meters per second) measured on the first layer that the winch can maintain under drum load.

The maximum rope tension (in kilonewtons), measured at the drum commences to rotate in the direction of haul, the prime mover being set for maximum torque under automatic control and the rope being wound on the drum in a single layer.

The maximum rope tension (in kilonewtons), measured at the drum commences to rotate in the direction of haul, the prime mover being set for maximum torque under automatic control and the rope being wound on the drum in a single layer.

The maximum rope tension (in kilonewtons), measured at drum exit when the drum just commences to rotate on the opposite direction to the applied driving torque, the prime mover being set for maximum torque in automatic control, with the rope wound on t ...

The derrick boom heel having a pivot is hinged with the lower part of the mast, and the head of derrick boom, through steel wire, is connected with the mast top. The mast itself is fixed with the hull deck at mast bottom end, maintaining its stand state. ...

A winch used for hoisting and lowering cargo.

A winch having a rope storage capacity and used for slewing and retaining a boom.

A winch having a rope storage capacity and used for topping, lowering and supporting a boom under load and no load.

A winch, frequently unpowered, having rope storage capacity and used for topping and lowering a derrick boom while the boom is unloaded and for supporting it while it is supporting a load.

A crane with a jib which may be rotated by turning gear and adjusted in the vertical plane.

A crane with a cantilever which is incapable of luffing. The cargo hook is fixed on the out end of the cantilever or hanged on a movable carriage along it.

A crane with a boom consisted of several sections, being capable of moving the weight positions though folding the boom.

A crane, with its boom structure consisting of several sections, each section being capable of telescoping along the boom’s axial direction and changing its boom length, and its boom being of luffing.

Refers to the total weight of allowable lifting capacity of heavy cargo, together with the mass of the sub-hook (or fittings) under design working conditions. For the crane with variable-luffing, the safe working load is defined based on the luffing capac ...

A winch with one or more rope storage drums for veering out, hauling in or making fast tow ropes.

A winch having a rope storage drum with or without warping end for manipulation of the rope bridle.

The maximum static pulling force produced through a vessel’s harbor pile towing test.

A device, which is linked with the towboat, and under emergency conditions, tows away any ship from site. The device consists of reel 、towing hawser、signal cable、 buoy、 wire storage box、signal lamp etc.

A winch designed specifically for lowering、retaining and hoisting an accommodation ladder, and having a rope storage drum.

A lightly powered or unpowered drum intended solely for rope storage