What deck machinery is used in anchor handling?
Different Mariner deck machinery types include; anchor windlass/mooring winches, mooring winches, aft anchor winches, chain stoppers, SPM chain stoppers, vertical capstans, towing winches, tugger winches and positioning winches.
What is anchor handling operation?
Introduction. With anchor handling operations the idea is that in the end a rig (or barge) is connected to one or more anchors which are dropped on the seafloor. Each of these dropped anchors are connected with a long wire to a fairlead winch on the rig. Once all is in place the rig will stay put.
What is deck machinery?
These include deck machinery such as mooring equipment, anchor handling equipment, cargo handling equipment and hatch covers. Other items include lifeboats and liferafts, emergency equipment, watertight doors, stabilisers and bow thrusters.
What is a mooring winch?
Mooring winches secure the shipboard end of mooring lines, provide for adjustment of the mooring line length and compensate for changes in draft and tide. – Non-split drum mooring winch – The undivided drum winches are commonly found on smaller ships.
What are the correct anchoring procedure?
- Approach the anchor position heading into wind and tide with speed around 2 knots at 0.5NM from the position.
- Lower the anchor with gear to around half shackle off the bottom and then hold the anchor on brake.
- Give Stern movement to stop the vessel over the ground once the vessel is in the anchoring position.
What is deck Machinery maintenance?
It is essential that deck machinery should require minimum maintenance. Totally enclosed equipment with oil bath lubrication for gears and bearings is now standard but maintenance cannot be completely eliminated and routine checking and greasing should be carried out on a planned basis.
Why anchor is used in ship?
To keep a vessel in one place, anchors are used to combat wind and currents that want to move the vessel off course. Anchors can be temporary, like those most frequently used by boats and ships in shallow water, or permanent, like those used for oil rigs.
What is the function of deck machinery?
Working on ship’s deck involves carrying out routine procedures such as painting and chipping, operating deck machinery, or handling cargo. Most of these jobs involve handling one or more types of deck tools and equipment while performing them.
What are the two types of mooring winch?
Mooring winch for ships is used to realize the safe stop of the ships, the winch can be driven with different power modes, the two main types are electric motor drive and hydraulic pump drive, and the latter is more widely used especially on large scale ships for mooring operations.
What is the difference between mooring and docking?
Mooring a boat at a pier for a couple of hours while you go ashore for lunch would be docking, but mooring a boat at an allocated slip in a marina where it’s always stored when not in use would be berthing. To put it another way, a boat is docked for a short period of time and berthed for an extended period of time.
How do you prepare an anchor for letting go?
Once deck power is obtained, the following operations are carried out:
- Ensure that the windlass brake is on and holding and that the windlass is in gear.
- Remove the hawse pipe covers.
- Remove the devil’s claw.
- Remove any additional lashings.
- Remove the bow stopper, guillotine or compressor.