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An official publication announcing corrections or information affecting nautical charts and navigational publications. Notices can provide permanent chart corrections, temporary or preliminary information, publication amendments and details of new or changed aids and hazards. Numbering, frequency, format and correction procedure depend on the issuing hydrographic office or competent authority. A notice must be matched to…
The principal international treaty for preventing and minimising pollution from ships arising from routine operations and accidents. MARPOL consists of the 1973 Convention as modified by the 1978 and 1997 Protocols and later amendments. Its six technical annexes address oil, noxious liquid substances in bulk, harmful packaged substances, sewage, garbage and air pollution and energy-efficiency…
An absorbent or collecting collar placed around a deck fuel filler to catch small spills and splashback. The collar fits around the fill opening or nozzle area during refuelling and helps prevent fuel reaching the deck and water. Designs include absorbent pads and reusable collars that direct overflow into a small container. It is a…
Navigational and meteorological warnings, forecasts and other urgent safety-related information broadcast to ships. Usually abbreviated to MSI, it includes navigational warnings, meteorological warnings and forecasts, search-and-rescue information and other urgent messages relevant to safe navigation. The information is coordinated for defined service areas and issued by authorised providers. MSI is distributed through services including NAVTEX…
A berth arranged in the after part of a vessel, commonly extending beneath a cockpit side deck or cockpit seat. It is often a single narrow sleeping space entered from the cabin, although size, side and arrangement vary. The surrounding volume may share space with lockers, machinery, steering gear or service runs depending on design….
The end of a rope actively manipulated to form a knot, bend, hitch or splice. It is passed around an object or through loops and turns while the standing part leads towards the rest of the rope or load. Some instructions call it the running end, although that phrase can also describe a freely moving…
A hitch formed by two successive turns around an object with the rope crossing between them. It is quick to tie in the end or bight of a line and is useful for temporary attachment where the load remains reasonably steady and in a suitable direction. Fender lines are a common light-duty use, although a…
A line used to move or secure a vessel by hauling from a fixed point or another vessel. Warping can move a vessel along a quay, through a confined space or towards an anchor, buoy or shore point using capstans, winches or manual purchase. In some usage a warp is simply a mooring or towing…
Waves or turbulent water generated by a vessel’s hull or propulsion system. Hull-generated wash forms part of the wake, while propeller and thruster wash can create strong local jets even when the vessel has little speed over the ground. Shallow or confined water can amplify wave height, bank interaction and seabed disturbance. Wash can endanger…
Removable boards or panels fitted in a companionway opening to limit water entry into the accommodation. They normally stack or slide into side grooves below a hatch and may be timber, composite, acrylic or metal. Multiple sections permit partial closure and can incorporate ventilation, glazing or locking arrangements. Washboards contribute to weathertight or watertight integrity…
If you belive the Earth is flat, you're about to fall of the end...
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