They must be drydocked on a schedule for routine underwater inspection.īarnacle -Small marine growth which attaches itself to a vessel’s hull in large numbers, often greatly retarding her speed.īattens -Long strips of wood used in the mold loft for fairing lines also, wooden protective strips in cargo holds see hatch battens.īeam -An athwartship member supporting a portion of a deck. The plans must be approved prior to construction and all repairs must be approved by the USCG. In the USA oil and chemical tank barges must meet US Coast Guard rules and regulations. Some have tanks for carrying oils and chemicals, others have hoppers for dry cargoes like grain or just a flat deck for specialized cargo. Picture of 2 loaded inland rivers tank barges, carrying liquid cargo. Cargo barges in the USA do not have propulsion. Some of the largest cannons in the navy were on hospital ships – they were in the bilge for ballast.īallast Tank -Watertight compartment to hold ballast.īarge -A water tight vessel that floats in water. Īthwartship -Across the ship at right angles to the centerline.Īuxiliaries -Machinery supplementary to main propulsive units.Īwning Deck -Shade deck above another deck.īabbet -A relatively soft metal alloy used for bearings.īallast -Any weight or weights (usually sea water, but could be concrete, scrap steel, etc.) used to keep the ship from becoming “top heavy” or to change her trim. The anode is sacrificed to protect the metal hull of the vessel – without the anode, the hull plating would be dissolved by electrolysis.Īperture -A recess in which the propeller is located.Īssemble -To fit together small parts, in making a large section,or part. They are ‘eaten’ up by electrical currents moving from the vessel to the water. Some of the different anchors are: Work boat anchors, Stockless, Hall, Mushroom, Eells, Kedge, Navy pattern, Union, and Speck.Īnchor Joining Link -A chain member with a removeable part used to connect the anchor to the swivel on the chain assembly.Īngle Clip - A short piece of angle bar.Īnneal -To soften metal by heating and allowing it to cool slowly.Īnode -Zink or aluminum or some such alloy that is fixed to the hull of a vessel. There are a number of different types of anchors.
The anchor grips the ocean bottom and is fastened to the ship by a chain. Sometimes called an air gun or “gun.”Īir Port -A circular opening or window through the ship’s, or deck house, for light or ventilation.Īmidships -At or near the midship section of the ship.Īnchor - A heavy hook-shaped device for holding a ship at rest in water.
#Stern of the vessel meaning portable
Access Holes- Holes cut in ship’s structure to permit entering or leaving various compartments.Īccommodation Ladder- A portable set of steps on a ship’s side for the accommodation of people boarding from small boats or from a pier.Īfter Body- Hull form aft of the midship section.Īfter Peak- The compartment in the narrow part of the stern, aft of the last water-tight bulkhead.Īfter Peak Bulkhead - Watertight bulkhead farthest aft.Īfter Perpendicular -A vertical straight line at, or near the after edge of rudder post.Īir Hammer- Hammer driven by compressed air for riveting, or chipping.
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