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The prototype Battenberg course indicator of 1892. The guide bar and circular disc are at the bottom of the picture; the position bars are at the top and left; the speed bar stretches up and right to meet the almost horizontal diameter grove at the 3 o'clock position
Mooring involves (a) beaching the boat, (b) drawing in the mooring point on the line (where the marker buoy is located), (c) attaching to the mooring line to the boat, and (d) then pulling the boat out and away from the beach so that it can be accessed at all tides.
Suitable for nuclear-powered warships, and part of an operational Naval base or a building and refitting yard. All X-berths have as an integral part of their safety arrangements a permanent health physics department, a local emergency monitoring organisation and a local safety plan prepared under the auspices of a local liaison committee. [4]
Single anchor leg mooring (SALM), which can be used in both shallow and deep water. [1] see Thistle SALM as an example. Vertical anchor leg mooring, which is seldom used. [1] Two types of single point mooring tower: Jacket type, which has a jacket piled to the seabed with a turntable on top which carries the mooring gear and pipework [1]
As a verb bitt means to take another turn increasing the friction to slow or adjust a mooring ship's relative movement. [1] Mooring fixtures of similar purpose: A bollard is a single vertical post useful to receive a spliced loop at the end of a mooring line. [1] A cleat has horizontal horns. [4]
A mooring mast, or mooring tower, is a structure designed to allow for the docking of an airship outside of an airship hangar or similar structure. More specifically, a mooring mast is a mast or tower that contains a fitting on its top that allows for the bow of the airship to attach its mooring line to the structure. [1]
The properties of chain, versus wire, mooring lines have been investigated, with chain mooring lines causing reductions in anchor capacity of up to 70%. [6] Thus, where appropriate and cost-efficient, wire mooring lines should be used. The embedded section of a mooring line contributes to the anchor's holding capacity against horizontal movement.
Spars are permanently anchored to the seabed by a spread mooring system composed of either a chain-wire-chain or chain-polyester-chain configuration. [2] The cylinder comprises a number of tanks; the lowest contains ballast, mid-water and/or extracted oil, the upper, air for buoyancy. [ 3 ]