In stability or trim due to faulty loading, damage, etc., and to Peak, or wing ballast tanks, is utilized to overcome a temporary defect Portableīallast, usually in the form of water pumped into or out of the bottom, Trim due to faulty design or changed character of service. Iron is usually fitted to overcome an inherent defect in stability or Permanent ballast in the form of sand, concrete, lead, scrap, or pig
Portable or fixed, depending upon the condition of the ship. The purpose of making the vessel more seaworthy. And also contribute to the lateral support, thereby assisting They serve as additional supports to prevent the masts goingįorward. Mast levels, except the lower, to the ship's side at some distance abaft Suspended above a vessel's decks, bridges, etc., for protection against Propulsive machinery (boilers and engines on a steam installation).
Motors, engines, etc., required on a ship, as distinguished from main Transverse, across the line of a vessel's course. Rear of or abaft the stern as regards motion, the opposite of going Water plane sections, including such items as shafting, struts, bossings,ĭocking and bilge keels, propellers, rudder, and any, other feature,Įxtraneous to the hull and generally immersed.Ĭross section of the immersed portion of a vessel, the cross sectionīeing taken at right angles to the fore and aft centerline of the Of a vessel extending beyond its main outline as shown by transverse and One or more pieces of angle bar and fitted tightly around a pipe, trunk,įrame, longitudinal, or stiffener intersecting or projecting through aīulkhead or deck for the purposes of making a watertight or oiltight Section used as a stiffener and for attachment of one plate or shape toĪ bulb on one flange of the, angle, used as a frame, beam, or stiffener. Stern from swinging with the current or the tide.
Used when mooring in a narrow channel or harbor to prevent the vessel's It is sometimes called an oilįrom about one-fourth to one-third the weight of the main bowers and The boat head on into the sea and in spreading a vegetable or animal oilįrom a container placed inside the bag. When placed overboard it serves a double purpose in keeping Required by the Bureau of Marine Inspection to be carried in each The weight varies, being usually from 900 toĪs it does not sink to the bottom. It is usually planted from a small boat, the vesselīeing hauled up toward it. The weight varies with the size and service of On deck or elsewhere about the vessel for use ,in the event either of Three are usually carried, two (the mainīowers) in the hawsepipes, or on bill boards, and a third (spare) lashed When an anchor is lowered to theīottom, the drag on the cable causes one or more of the prongs, calledįlukes, to sink into the ground which provides holding power.Ĭarried in the bow of a vessel. Implement attached to a vessel by means of a rope or chain cable for Used to convey the idea of general locality but not that of definite Middle portion of a vessel as distinguished from her ends. Stern, it is a vertical line passing through the point where theĭesigned water line intersects the stern of the ship.ĭeck house of a vessel, usually round in shape and fitted with a hinged Perpendicular to the base line intersecting the after-edge of the stern The gangway, leading down, the vessel's side to a point near the water, Until you are scoring 80% or better on them.Ī link to a very informative web site on Ship ConstructionĪ B C D E F G H I J K L M N O P Q R S T U V W X Which includes this module, you should work through these questions
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