Marine Engineering and Naval Architecture

Each ship/vessel has been designed with mooring arrangements such that ropes and wires of recommended strength can help it moor safely alongside a berth, floating platform, buoy or a jetty. Fundamentally a ship/vessel has to be positioned alongside a jetty or a berth, between mooring buoys, to a mooring buoy, to another ship or barge and then made fast using her own anchors, mooring lines or shore lines. Some very common methods of mooring are  Mediterranean mooring, Baltic mooring, Running mooring, Standing mooring, Spider mooring buoys , Single point or single buoy mooring, Conventional or multi buoy mooring, Ship to Ship Mooring While Moored alongside a fixed or floating jetty or a sea berth there are various forces action on the vessel such as wind, current, tide, wave action, swell, surging induced due to passing ships and trim of the vessel. The spring, breast and head lines prevent vessel’s movement against the action of these forces. The directional effect of these...

The mooring refers to any permanent structure to which a vessel/ship may be secured. Examples include quays, wharfs, jetties, piers, anchor buoys, and mooring buoys. A ship is secured to a mooring to forestall free movement of the ship on the water. An anchor mooring fixes a vessel's position relative to a point on the bottom of a waterway without connecting the vessel to shore. As a verb, mooring refers to the act of attaching a vessel to a mooring. Mooring is often accomplished using thick ropes called mooring lines or hawsers. The lines are fixed to deck fittings on the vessel at one end and to fittings such as bollards, rings, and cleats on the other end. Mooring requires cooperation between people on a pier and on a vessel. Heavy mooring lines are often passed from larger vessels to people on a mooring by smaller, weighted heaving lines. Once a mooring line is attached to a bollard, it is pulled tight. Large ships generally tighten their mooring lines using heavy machin...

The only meaningful way to rate anchor winch performance is by looking at what it will lift and at what speed. The two things to consider are (a) the maximum pull capability and (b) the working load of the winch. Maximum pull (sometimes referred to as stall load) is the maximum short term or instantaneous pull of the winch. Working load is generally rated at about one third of the maximum pull and is usually considered to be the load that the winch is pulling once the anchor is off the bottom. To determine your required maximum pull capability, complete the calculation below. The most useful way to rate windlass performance is by looking at what it will lift and at what speed. The two things to consider are the working load and the maximum pull capabilities of windlass. Working load is the load that the windlass is pulling once the anchor and rode are off the bottom. Maximum pull (sometimes referred to as stall load) is the maximum short term or instantaneous pull of the windlass. ...