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Ships Construction

 

A The best information on the location of the blocks when dry docking a vessel is contained in the __________. ship's docking plan general arrangement plan shell expansion plan docking diagram
D Wale shores would be used when dry docking a vessel with __________. a list tumble home excessive trim excessive deadrise
A Which of the following requires the vessel to be dry-docked? Inspection of the tail shaft liner Cleaning of the hull Verification of load line measurements Inspection of the double bottoms
C A large basin cut into the shore, closed off by a caisson, and used for dry docking of ships is known as a __________. slipway caisson dock graving dock ground warp
B While in dry dock your vessel will be belt-gauged. This process involves __________. testing and examining the anchor cables for defective links drilling or sonic-testing the hull to determine the plate thickness taking the vessel's offsets to check for hull deformation measuring the thickness of the tail shaft liner
C Which statement about a vessel's stability while dry-docking is TRUE? The stability of the vessel increases as a dock is pumped out due to the support of the keel blocks. As the dock begins to support the weight of the vessel, stability calculations are based on the ship and dock as a single unit. Every ton of weight bearing on the blocks acts as if a ton of weight was removed at keel level. When the ship touches the blocks, the beam for stability purposes increases to the beam of the dry-dock.
A In illustration D033DG below, what is the structural member indicated by the letter I? keel center pillar girder garboard strake
A In illustration D033DG below, which letter indicates a seam? E H L M
A In illustration D033DG below, what is the area indicated by the letter G is known as? turn of the bilge garboard stringer plate entrance
A In illustration D033DG below, what is the space indicated by the letter J known as? double bottom bilge tank floor space flooding barrier
A In illustration D033DG below, what is the structural member indicated by the letter K? floor stringer longitudinal frame girder
B In illustration D033DG below, what is the structural member indicated by the letter L? bilge keel longitudinal web frame side keel
C In illustration D033DG below, which letter indicates a longitudinal? M C L E
D In illustration D033DG below, what does the letter "M" indicate? cant frame intercostal stringer web frame
D In illustration D033DG below, which letter indicates the garboard strake? A B G H
A In illustration D033DG below, what is the strake of shell plating indicated by letter H known as? garboard strake bilge strake outboard keel plate sheer strake
D In illustration D033DG below, the structural member indicated by the letter K was fitted in segments between continuous longitudinals. It is known as which type of floor? Lightened Non-watertight Open Intercostal
B In illustration D033DG below, what is the joint indicated by letter D? seam butt sheet line span
D In illustration D033DG below, which letter indicates a butt? J E F D
B In illustration D033DG below, the lower seam of the strake indicated by the letter B is sometimes riveted. Why is this done? reduce construction costs serve as a crack arrestor and prevent hull girder failure increase the strength in a highly stressed area provide the flexibility inherent in a riveted seam
D In illustration D033DG below, what is the structural member indicated by the letter F? erection girder deck support pillar
A In illustration D033DG below, the stringer plate is represented by which letter? A C I N
D In illustration D033DG below, what is the run of plating labeled A known as? sheer strake deck longitudinal deck strake stringer plate
B In illustration D033DG below, what is a wooden deck installed on top of the plating lettered N known as? spar decking ceiling furring flooring
D In illustration D033DG below, what is the plating indicated by the letter N known as? floor riders tank-top rider plating ceiling inner bottom
B In illustration D041DG below, which is the symbol for the vertical plane midway between the fore and aft perpendiculars? 2 3 4 5
B In illustration D041DG below, which of the following is the symbol for the reference from which transverse measurements are made? 1 5 4 3
A In illustration D041DG below, which of the following is the symbol for displacement? 1 2 3 4
D In illustration D041DG below, what does symbol 1 refer to? angle of inclination change of draft centerline displacement
D In illustration D041DG below, which symbol is the reference from which the height of the center of gravity is measured? 5 4 3 2
B In the illustration D041DG below, what does symbol 2 represent? bilge level baseline beam limit displacement
B In illustration D041DG below, which is the symbol for amidships? 2 3 4 5
A In the illustration D041DG below, what does symbol 3 represent? amidships displacement baseline forward perpendicular
D In the illustration D041DG below, what does symbol 5 represent? counterflood limits displacement leverage center centerline
C The term "pintle" and "gudgeon" are associated with the __________. steering engine jumbo boom rudder anchor windlass
D The projecting lugs of the rudderpost which furnish support to the rudder are called __________. pintles rudder lugs bases gudgeons
A The terms "cant frame" and "counter" are associated with the vessel's __________. stern cargo hatch steering engine forecastle
B A Kort nozzle is a(n) __________. intake valve on a diesel engine hollow tube surrounding the propeller used to improve thrust nozzle attached to a firefighting hose piston cylinder on a diesel engine
A A "contra-guide" is a type of __________. rudder steering engine bow thruster cargo gear
D The horizontal flat surfaces where the upper stock joins the rudder are the __________. lifting flanges rudder keys shoes of the rudder rudder palms
B A chock __________. permits easy jettisoning of deck cargo in an emergency provides openings through the bulwark for mooring lines prevents stress concentration in the bulwark is a deck fitting used to shackle gear to the deck
A What is the purpose of the freeing ports on a vessel with solid bulwarks? Allow water which may be shipped on deck to flow off rapidly Prevent the formation of any unusual stress concentration points Lighten the above deck weight caused by a solid bulwark Permit easy jettisoning of deck cargo in an emergency
D Freeing ports on a vessel with solid bulwarks __________. permit easy jettison of deck cargo in an emergency provide openings through the bulwarks for mooring lines prevent stress concentration in the bulwark allow water shipped on deck to flow off rapidly
A One function of a bulwark is to __________. help keep the deck dry prevent stress concentrations on the stringer plate reinforce the side stringers protect against twisting forces exerted on the frame of the vessel
A A deck fitting, used to secure line or wire rope, consisting of a single body with two protruding horns is called a __________. cleat bitt capstan bollard
C A vessel is constructed with a steel hull and an aluminum superstructure. Which statement is TRUE? The aluminum will provide greater resistance to the spread of fire by conduction. The steel at the area of the aluminum-to-steel connection must be closely checked for galvanic corrosion. The aluminum structure is usually attached to a steel coaming by a method that insulates the two metals. If the superstructure is stressed, an aluminum structure requires additional expansion joints to prevent fracture.
C Holes in the bulwark, which allow deck water to drain into the sea, are __________. doggers swash ports freeing ports fidleys
D When using the term "limber system" one is referring to a __________. cleaning system weight reduction system strengthening system drainage system
C "Limber" is a term associated with __________. securing gear emergency gear drainage deck cargo storage
A Which is an advantage of using watertight longitudinal divisions in double bottom tanks? Cuts down free surface effect Lowers the center of buoyancy without decreasing GM Decreases weight because extra stiffeners are unneeded Increases the rolling period
C The floors in a vessel's hull structure are kept from tripping, or folding over, by __________. transverse deck beams longitudinal deck beams bottom longitudinals face plates
A Floors aboard ship are __________. frames to which the tank top and bottom shell are fastened on a double bottomed ship longitudinal angle bars fastened to a surface for strength longitudinal beams in the extreme bottom of a ship from which the ship's ribs start transverse members of the ships frame which support the decks
B Aboard ship, vertical flat plates running transversely and connecting the vertical keel to the margin plates are called __________. girders floors stringers intercostals
C Frames to which the tank top and bottom shell are fastened are called __________. stringers intercostals floors tank top supports
A Vertical structural members attached to the floors that add strength to the floors are called __________. stiffeners boss plates buckler plates breast hooks
A What is NOT an advantage of double bottom ships? They are less expensive to construct because of increased access space. The center of gravity of a loaded bulk cargo ship may be raised to produce a more comfortable roll. The floors and longitudinals distribute the upward push of the water on the ship's bottom. The tank top forms a second skin for the vessel.
D Which statement is TRUE concerning protection of double bottom tanks against excessive pressure? There must be twice as much vent area as the area of the fill line. Each vent for the tank must be equal to the area of the tank filling line. The tanks must be protected by overflows. The total area of the vents or the overflow shall be at least 125% of the area of the fill line.
D Which statement concerning solid floors is TRUE? They are lighter than open floors. They must be watertight. They are built of structural frames connected by angle struts and stiffeners, with flanged plate brackets at each end. They may have lightening, limber, or air holes cut into them.
C The "inner bottom" is the __________. compartment between the tank top and shell of the vessel inner side of the vessel's shell tank top space between two transverse bottom frames
D What is used to prevent accidental flooding of a double bottom or peak tanks in the event of a pipe rupture due to collision? Pipe lines must run vertically from the tank to a point above the margin line before turning fore or aft towards the pump. Separate lines are provided for filling and pumping these tanks. All tanks must be served by the fewest possible number of pipes to reduce the possibility of rupture. Suction lines are fitted with a non-return valve
D The usual depth of a beam bracket is __________. same depth as the beam 5 times the depth of the beam 10 times the depth of the beam 2 1/2 times the depth of the beam
C A deck beam does NOT __________. act as a web to prevent plate wrinkling due to twisting action on the vessel act as a tie to keep the sides of the ship in place lessen the longitudinal stiffness of the vessel act as a beam to support vertical deck loads
B The deck beam brackets of a transversely framed vessel resist __________. shearing stresses racking stresses sagging stresses hogging stresses
C Beams are cambered to __________. increase their strength relieve deck stress provide drainage from the decks All of the above.
A Which term refers to a transverse curvature of the deck? Camber Deadrise Flare Freeboard
D The strength of a deck will be increased by adding __________. hatch beams sheer camber deck beam brackets
D The pillar shape that gives the greatest strength for the least weight is the __________. "H" Beam pillar "I" Beam pillar octagonal pillar circular type pillar
C A carling is used aboard ship __________. to prevent the anchor from fouling when the brake is released to provide an extra heavy fitting in a heavy lift cargo rig to stiffen areas under points of great stress between beams as a connecting strap between the butted ends of plating
B A partial deck in a hold is called a(n) __________. shelter deck orlop deck main deck weather deck
B The ceiling is __________. material driven into seams or cracks to prevent leaking a wooden protection placed over the tank top the overhead in berthing compartments None of the above are correct
C The wooden planking that protects the tank top from cargo loading is called __________. toms shores ceiling frames
A Regulations define the bulkhead deck as __________. (subdivision and stability regulations) the uppermost deck to which transverse watertight bulkheads extend the uppermost complete deck the lowermost deck to which transverse watertight bulkheads extend any deck extending from stem to stern
B The maximum length allowed between main, transverse bulkheads on a vessel is referred to as the __________. floodable length permissible length compartment standard factor of subdivision
B Camber, in a ship, is usually measured in __________. feet per feet of length inches per feet of breadth feet per feet of breadth inches per feet of length
D The maximum length allowed between main, transverse bulkheads on a vessel is referred to as the __________. floodable length factor of subdivision compartment standard permissible length
D In ship construction, keel scantlings should be the greatest __________. one-third the distance from the bow at each frame one-third the distance from the stern amidships
D Keel scantlings of any vessel are greatest amidships because __________. of severest racking stresses resistance to grounding is at a maximum amidships connections between forebody and afterbody are most crucial of maximum longitudinal bending moments
C The "margin plate" is the __________. outer strake of plating on each side of the main deck of a vessel uppermost continuous strake of plating on the shell of a vessel outboard strake of plating on each side of an inner bottom plate which sits atop the center vertical keel
A The terms "ceiling" and "margin plate" are associated with the __________. tank top engine room crew's quarters main deck
B A term applied to the bottom shell plating in a double-bottom ship is __________. shear plating outer bottom bottom floor tank top
B In a transversely framed ship, the transverse frames are supported by all of the following EXCEPT __________. longitudinals web plates side stringers girders
B In a longitudinally-framed ship, the longitudinal frames are held in place and supported by athwartship members called __________. stringers web frames floors margin plates
B When the longitudinal strength members of a vessel are continuous and closely spaced, the vessel is __________. transversely framed longitudinally framed web framed intermittently framed
C A vessel having continuous closely spaced transverse strength members is __________. cellular framed longitudinally framed transversely framed web framed
A In ship construction, frame spacing is __________. reduced at the bow and stern greater at the bow and stern uniform over the length of the vessel, with the exception of the machinery spaces, where it is reduced due to increased stresses uniform over the length of the vessel
D Why are most break bulk vessels built with the transverse framing system rather than the longitudinal system? The numerous longitudinal frames cause excessive broken stowage. The transverse system provides better support to the varying cargo densities on a break bulk vessel. The transverse system is more resistant to hog and sag stresses. The deep web frames interfere with the stowage of break bulk cargo.
C Transverse frames are more widely spaced on a ship that is designed with the __________. isometric system of framing transverse system of framing longitudinal system of framing centerline system of framing
B What is the purpose of cant frames in steel vessels? To support the overhang of the stern To provide strength to shell plating at the stern To support the plating of a cylindrical tank To add strength to the deck beams which support the weather decks
C Reinforcing frames attached to a bulkhead on a vessel are called __________. intercostals brackets stiffeners side longitudinals
A Lighter longitudinal stiffening frames on the vessel's side plating are called __________. stringers side stiffeners intercostals side frames
B The term "scantlings" refers to the __________. placement of a vessel's load line measurements of structural members draft of a vessel requirements for ship's gear
A The garboard strake is the __________. row of plating nearest the keel raised flange at the main deck edge riveting pattern most commonly used in ship construction riveted crack arrester strap on all-welded ships
B The strake on each side of the keel is called a __________. sheer strake garboard strake gatewood strake insulation strake
D In vessel construction, the garboard strake is __________. located next to and parallel to the gunwale another term for the rub rail another term for the bilge keel located next to and parallel to the keel
A Another name for the garboard strake is the __________. A strake stringer plate Z strake side keel plate
C The term "strake" is used in reference to __________. rudder mountings anchor gear hull plating vessel framing
D The joint formed when two steel shell plates are placed longitudinally side to side is called a __________. strake bevel bond seam
B The joint formed when two steel plates are placed end-to-end is called a __________. seam butt bond bevel
A Owing to the greater girth of a ship amidships than at the ends, certain strakes are dropped as they approach the bow and stern to reduce the amount of plating at the ends. These strakes are called __________. drop strakes throughs stealers voids
D To reduce the number of strakes at the bow, two strakes are tapered and joined at their ends by a single plate. This plate is known as a __________. lap strake cover plate joiner stealer plate
A Which arrangement of shell plating is used most in modern shipbuilding? Flush In-and-Out Joggled Clinker
C What is NOT an advantage of ship construction methods using welded butt joints in the shell plating? Keeps practically 100% of tensile strength at the joints Reduces frictional resistance Reduces plate stress Reduces weight
A Which is NOT an advantage of the flush method of welded shell plating? Reduces plate stress Reduces weight Reduces frictional resistance Keeps practically 100% of tensile strength at the joints
A Shell plating that has curvature in two directions and must be heated and hammered to shape over specially prepared forms is called __________. furnaced plate rolled plate compound plate flat plate
B Shell plating is __________. a hatch cover the outer plating of a vessel the galvanizing on steel synonymous with decking
B The function of the bilge keel is to __________. add strength to the bilge reduce the rolling of the vessel serve as the vessel's main strength member protect the vessel's hull when alongside a dock
A Bilge keels are more effective at dampening rolls as the __________. rolling increases draft decreases pitching increases list increases
C Which statement about bilge keels is CORRECT? They attach to a low stress area. They provide support when the vessel is dry docked. They increase resistance to rolling. They are critical strength members and require careful design consideration.
C The fore and aft run of deck plating which strengthens the connection between the beams and the frames and keeps the beams square to the shell is called the __________. garboard strake limber strake stringer strake sheer strake
A To rigidly fasten together the peak frames, the stem, and the outside framing, a horizontal plate is fitted across the forepeak of a vessel. This plate is known as a(n) __________. breasthook joiner intercostal plate apron plate
B Panting frames are located in the __________. forward double bottoms fore and after peaks centerline tanks on tankships after double bottoms
A A thirty pound plate would be __________. 3/4" thick 1/2" thick 1" thick 3/8" thick
C The thickness of a 30.6 pound plate is __________. 3/8" 1/2" 3/4" 1"
D What term indicates the line drawn at the top of the flat plate keel? Designer's waterline Molded line Keel line Base line
A What descriptive term indicates that the dimension is measured from the inner face of the shell or deck plating? Molded Tonnage Register Effective
A Which term indicates the rise in height of the bottom plating from the plane of the base line? Deadrise Sheer Camber Molded height
A By definition, a "spar deck" is the __________. upper or weather deck above the main strength deck lower most continuous deck not broken by water tight bulkheads after most weather deck above the main strength deck deck of light construction below the main or strength deck
C A vessel's "quarter" is that section which is __________. abeam dead astern on either side of the stern just aft of the bow
B The point that is halfway between the forward and after perpendicular and is a reference point for vessel construction is the __________. center line amidships mid-body half length
C The vessel's "quarter" is located __________. dead astern abeam on either side of the stern just forward of the beam on either side
D What term indicates the length measured along the summer load line from the intersection of that load line with the foreside of the stem and the intersection of that load line with the aft side of the rudder post? Length on the waterline Register length Length overall Length between perpendiculars
C The space above the engine room is called the __________. noble gold locker fidley middle hatch
A The purpose of a bilge well is to __________. collect water to be pumped out provide access for the pneumercator afford access to the shell through the double bottoms provide a base line for sounding measurements
B A "strongback" refers to a __________. spanner stay bar securing a cargo port centerline vertical bulkhead deep beam
C The beam of a vessel refers to the __________. molded depth of the vessel internal cubic capacity width of the vessel depth between decks
C Freeboard is measured from the upper edge of the __________. bulwark sheer strake deck line gunwale bar
A Molded depth is measured from the __________. inside of the shell outside of the shell top of the garboard stake top of the center vertical keel
C The upward slope of a vessels bottom from the keel to the bilge is called __________. sheer camber rise of bottom rake
D What term indicates a curvature of the decks in a longitudinal direction? Deadrise Camber Flare Sheer
B What term indicates the immersed body of the vessel forward of the parallel mid-body? Sheer Entrance Flare Run
D What term indicates the midships portion of a vessel that has a constant cross section? Amidships Molded length Half length Middle body
C What term indicates the immersed body of the vessel aft of the parallel mid-body? Flow Counter Run Stern
C What term indicates the outward curvature of the hull above the waterline? sheer tumble home flare deadrise
B What term indicates an inward curvature of the ship's hull above the waterline? Deadrise Tumble home Camber Flare
A The fittings used to secure a watertight door are known as __________. dogs clamps latches clasps
D In nautical terminology a "dog" is a __________. heavy steel beam crow bar wedge device to force a water tight door against the frame
B The perforated, elevated bottom of the chain locker, which prevents the chains from touching the main locker bottom and allows seepage water to flow to the drains, is called a __________. harping manger cradle draft
B The purpose of sheer in ship construction is to __________. eliminate the need for margin plates allow the ship to ride waves with drier decks eliminate the need for butt straps give greater strength at the deck edge
B A set of interior steps on a ship leading up to a deck from below is known as __________. stairs a companion way 'tween-decks All of the above.
B A cofferdam is __________. a heavy fore-and-aft beam under the deck made by placing two bulkheads a few feet apart a member that gives fore-and-aft strength any deck below the main deck and above the lowest deck
D The Sheer Plan __________. has the forebody to the right of centerline and afterbody to the left of centerline is an endwise view of the ship's molded form is usually drawn for the port side only shows a longitudinal side elevation
A The half-breadth plan is __________. usually drawn for the port side only an endwise view of the ship's molded form a plan with the forebody to right of centerline and afterbody to the left of centerline a longitudinal side elevation
C The body plan of a vessel is a(n) __________. plan made looking down on the ship, showing it's hull cut horizontally by the first set of planes vertical view made looking up in the ship, with the keel at the center endwise view of the ship's molded form longitudinal side elevation view
A Freeboard is measured from the upper edge of the __________. deck line gunwale bar sheer strake bulwark
B What is the name given to the distance between the waterline of a vessel and the main continuous deck of a vessel? The draft The freeboard The camber Buoyancy
C A long ton is __________. 1,000 pounds 2,000 pounds 2,240 pounds 2,400 pounds
B A weight of 1,000 short tons is equivalent to __________. 2,000 pounds 2,000 kips 2,240 long tons 1,500 foot-pounds
C A short ton is a unit of weight consisting of __________. 2,240 pounds 1,000 pounds 2,000 pounds 2,205 pounds
C What is the difference between net tonnage and gross tonnage? Net tonnage is tonnage of cargo compared to tonnage of whole ship. There is no difference. Net tonnage is the gross tonnage less certain deductions for machinery and other areas. Net tonnage is the net weight of the ship.
A Gross tonnage indicates the vessel's __________. volume in cubic feet draft in feet total weight including cargo displacement in metric tons
A Tonnage openings must be closed by means of __________. steel plates wooden hatch boards steel hatch boards press board
C A well in the uppermost deck of a shelter deck vessel which has only a temporary means of closing for the purpose of gaining an exemption from tonnage measurement is called a(n) __________. exemption space tonnage deck tonnage opening cofferdam
C The term that indicates how many tons of cargo a vessel can carry is __________. bale cubic loaded displacement deadweight gross tonnage
B The total weight of cargo, fuel, water, stores, passengers and crew, and their effects, that a ship can carry, is the __________. loaded displacement deadweight bale cubic gross tonnage
C Sometimes it is desirable to connect a member both by riveting and welding. Which statement is TRUE concerning this procedure? Tearing through the member is more likely in this type connection. The weld increases the tensile stress on the rivet heads. The welding must be completed before the riveting commences. The weld may be broken by the stresses caused by riveting.
C A welded joint's effectiveness is considered __________. 48 (%) 90 (%) 100 (%) 121 (%)
A What welding pattern is NOT used to permanently attach a stiffener to a plate? Tack Chain intermittent Continuous Staggered intermittent
C The welds used to attach stiffeners to a plate are known as __________. butt welds plate welds fillet welds seam welds
A The welds used to join shell plates in flush construction are known as __________. butt welds seam welds fillet welds continuous welds
A Which type of weld testing can be used to detect internal flaws? Radiographic Chemical reaction Dye penetrant Magnetic particle
C Which type of weld testing can be used to detect internal flaws? Magnetic particle Dye penetrant Ultrasonic Chemical reaction
B Which weld fault can only be detected by a method that examines the internal structure of a weld? Lack of reinforcement Lack of penetration Undercut Overlap
C Ultrasonic testing is used to determine the thickness of a vessel's shell plating and to __________. test the links of the anchor cables while being ranged check the wear of the rudder carrier bearing test welds for subsurface defects provide tail shaft clearances
C The type of welding employed in shipyards is primarily __________. brazing thermite welding electric arc pressure welding