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Chainplate on a Bavaria 35 Match without shrouds mounted.. A chainplate is a metal plate used to fasten a shroud or stay to the hull of a sailboat.One end of the chainplate is normally fastened to a turnbuckle which is connected to the shroud or stay, whereas the remainder of the chainplate normally has multiple holes that are bolted to the hull, or the chains. [1]
The other (the suspended span) begins underneath the anchor span, and has its far end resting on the next pier. The beams have holes directly above each other. The two holes are connected using hangers, a pair of connecting plates sandwiching the bridge girders. A pair of large steel pins through the plates and girder webbing provide the hinges ...
Gaff rig [1] is a sailing rig (configuration of sails, mast and stays) in which the sail is four-cornered, fore-and-aft rigged, controlled at its peak and, usually, its entire head by a spar (pole) called the gaff. Because of the size and shape of the sail, a gaff rig will have running backstays rather than permanent backstays.
Throat – On a quadrilateral sail, the throat is the upper forward corner of the sail, at the bottom end of a gaff or other spar. [18] Gaff-rigged sails, and certain similar rigs, employ two halyards to raise the sails: the throat halyard raises the forward, throat end of the gaff, while the peak halyard raises the aft, peak end. [19]
Two examples of parrel beads in use on a gaff sail. The black beads are on the parrel that attaches the gaff to the mast: it is attached to the jaws of the gaff. The brown beads are on individual parrels that connect the luff of the sail to the mast. Parrel beads (also spelled parral [1] or parrell) are an element of sailing rigging. They act ...
The first type of Jacob's ladder is a flexible hanging ladder. It consists of vertical ropes or chains supporting horizontal, historically round and wooden, rungs.
A simple suspension bridge (also rope bridge, swing bridge (in New Zealand), suspended bridge, hanging bridge and catenary bridge) is a primitive type of bridge in which the deck of the bridge lies on two parallel load-bearing cables that are anchored at either end. They have no towers or piers.
A rail repair dutchman is typically a 4–6-inch (100–150 mm) long piece of rail that is cut in advance for the purpose and carried by a section crew. If the gang finds a rail with a chipped or broken end, they remove the connector plates ( fishplates ), cut out the damaged section, replace it with the dutchman, and bolt the connectors back ...