Ship Construction Flashcards
A filled water ballast tank when ship is in salt water has a permeability of:
0%
An empty compartment has a permeability of:
100%
The effectiveness of a welded joint is considered how many percent?
100%
Cargo booms must be tested to rectify SWL every _____ years.
5
You are loading a cargo of cases into a hold which has a bale cubic of 44,000. The cargo consists of cases measuring 4 ft x 2 ft x 1.5 ft. Estimated broken stowage is 15%. What is the maximum number of cases which can be stowed in the hold?
3116
You are loading a cargo of canned goods with a stowage factor of 65. If you allow a 15% broken stowage, how many tons can be loaded in a space of 55,000 cubic feet?
719 tons
What is the stowage factor of a commodity whose density is 15 lbs. per cubic foot?
149 cu. ft/ton
A cargo of canned foodstuff is packed in cartons. Each carton is 36 cubic feet and weighs 340 pounds. What is the stowage factor of the cargo?
237 ft3/ton
The summer load line upper edge to the upper edge of the winter load line is:
¼ inch per foot of the Summer Draft
The Winter North Atlantic marked WNA is at a distance of 50 mm below the mark W and is required only on ships of what length?
100 m or less
In the transverse framing system, frame spacing is generally not more than ____ but is always reduced in the pounding region and in the peak tanks regions.
1000 mm
Draft markings in the metric system are written in intervals of _______?
10mm
The inside radius of the Plimsoll mark from the upper edge of the horizontal line through the ring.
125 mm
How many cubic feet of space is required to stow 815 tons of a cargo with a stowage factor of 15? (estimated broken stowage is 10%).
13,583 cu.ft
Gross tonnage is measured at _____?
2.83 cu.meters per measurement tons
How many cubic feet of space is required to stow 775 tons of a cargo with a stowage factor of 25? (estimated broken stowage is 15%).
22,794 cu.ft
How many cubic feet of space is required to stow 950 tons of a cargo with a stowage factor of 22? (estimated broken stowage is 12%)
23,750 cu.ft
What is the inside diameter of the ring?
250 mm
Draft markings in the metric system are written in _____ thickness?
25mm
What must the outside diameter of the ring be?
300 mm
Your vessel has a deadweight capacity of 5,000 tons and a cubic capacity of 300,000 cubic feet. You are to load lead, with a stowage factor of 18, and cotton, with a stowage factor of 80. If you load full and down, how much cotton should you load?
3387 tons
What is the length of the horizontal line drawn through the center of the disk?
450 mm
Periodic surveys to renew the load line assignment must be made at interval of NOT more than how many years?
5 years
The lower hold of your vessel has a bale capacity of 60,000 cubic feet. How many tons of cotton in bales having a stowage factor of 85 can be stowed in the lower hold, assuming a broken stowage factor of 20%?
565 tons
A cargo compartment filled with grain has a permeability of about:
60-85%
You will be loading bales of wool having a stowage factor of 100 in #3 lower hold which has a bale cubic capacity of 72,000. How many tons of the wool can be stowed in the compartment, assuming 10% broken stowage?
648 tons
You will be loading bales of wool having a stowage factor of 95 in #3 lower hold which has a bale cubic capacity of 85,000. How many tons of the wool can be stowed in the compartment, assuming 12% broken stowage?
787 tons
You will be loading bales of wool having a stowage factor of 80 in #3 lower hold which has a bale cubic capacity of 76,000. How many tons of the wool can be stowed in the compartment, assuming 15% broken stowage?
808 tons
Oil tanker design rules require that petroleum cargo tanks are separated from accommodation by:
a cofferdam
What is a dog?
A device to force a watertight door against the frame
Another name for the “garboard strake” is the:
A strake
Which plan would you refer to locate the second mate’s cabin?
accomodation plan
An imaginary line drawn perpendicular to the waterline where the edge of the rudder post meets the summer loadline is called:
Aft perpendicular
It is a watertight compartment between the aftermost watertight bulkhead and the stern.
After peaks
In heavy weather, you notice buckling in the midships deck plating of your vessel. To relieve the strain, you could:
all of the above
What additional fittings may be needed to facilitate efficient securing of deck cargoes? Where and how should they be installed?
All of these
Ship’s officers should check every cargo compartment after it has been filled with bulk grain to ensure:
all void spaces are filled
The purpose of sheer in ship construction is to:
Allow the ship to ride waves with drier decks
Vessels that are constructed with solid bulwarks have freeing ports installed. What is the purpose of having this installation?
Allow water which may be shipped on deck to flow off rapidly
The point that is halfway between the forward and after perpendicular and is the reference point for vessel construction.
Amidship
A vessel’s bottom will be subjected to tension when weight is concentrated which part of the vessel?
Amidship
A vessel’s bottom will be subjected to tension when weight is concentrated:
Amidships
In ship construction, keel scantlings should be the greatest:
Amidships
Weight concentration in which area will cause a vessel’s double bottom to be subjected to tension stresses?
Amidships
Weight concentration in which of the following areas will cause a vessel’s bottom to be subjected to tension stresses?
amidships
The center of the ring of the load line mark is to be placed:
amidships, mid-length between perpendiculars
A process used in steel products there is uniform heating of the material and then allowing it to cool slowly.
Annealing
To obtain correct positions for the blocks when drydocking a vessel, you would consult?
Any of the above
The ratio of the height of a vessel’s rudder to its width is referred to as the _______.
aspect ratio
What type of rudder may loose its effectiveness at angles of 10 or more degrees?
balance
These are rudders that have a larger area forward of the axis or 25-30 percent more.
Balance rudders
The ship hull at sea, being exposed to the sea and the cargo will act like a beam, the _____ stresses acting on the hull will normally have its maximum at the middle of the ship, when the ship is a homogeneous full load condition.
Bending
Additional _________ are necessary for support when a vessel drydock with the cargo on board.
Bilge corner
When a vessel drydock with the cargo on board, additional _________ are necessary for support.
Bilge corner
It is a flat keel construction that aids in the resistance of a vessel to roll and fitted along either side of the ship.
Bilge keel
They are projecting bulk and angle bars fitted at the turn of the bilge, the purpose of which is to reduce the rolling of the vessel.
bilge keels
The vertical fittings of iron or steel, iron or wood securely fixed and adequately strengthened on board for taking mooring ropes, towing ropes, etc. are called _____.
Bitts
The ratio of volume of displacement to a block having length, breadth, and draft of the vessel is known as _____.
block coefficient
It is plan which shows an endwise view of the ship’s molded form where the transverse frame section of the ship at various stations are drawn.
Body plan
This plan shows an endwise view of the ship’s molded form where the transverse frame sections of the ship at various stations are drawn.
body plan
The floors in a vessel’s hull structure are kept from tripping or folding over by _________.
bottom longitudinals
A vessel subject to sagging has _____.
Bottom plating under tensile stress
That part of the ship that cuts the water forward is called the:
bow
To rigidly fasten together the peak frames, the stem and the outside framing, a horizotal plate is fitted across the forepeak of the vessel. This plate is known as a(n):
breast hook
A flanged plate fitted over an air port on the ship’s outside shell to prevent water from entering the port is a:
brow
Metal plates that cover the top of the hawsepipe are called ____.
buckler plates
Metal plates used to secure the top of the hawse pipe to prevent water from passing through are called:
buckler plates
Vessels operating at higher speeds and those with high block coefficients are often fitted with ____.
Bulbous or protruding bow
It is the deck up to which all main transverse and watertight bulkheads are carried.
bulkhead deck
The vertical divisions arrange in the ships superstructure are known as:
Bulkheads
Freeboard is measured from the upper edge of the:
Bulwark
The most efficient method of joining two plates in the same plane is by means of:
Butt weld
Flush constructed vessels are joined to the shell plating by ____?
Butt welds
The welds used to join shell plates in flush construction are known as _______.
butt welds
Shell plating provides the greatest contribution to the longitudinal strength of the ships structure, they are arranged in fore and aft direction and welded together. These vertical welds are called:
butts
When riveted joints found at the ends of plating they are called __________.
Butts
It is the curvature of the decks in the transverse direction and measured as the height of deck at center above the height of deck at side.
Camber
What term indicates the transverse curvature of the deck?
Camber
The vertical barrel working on a vertical spindle, operated by electric or hydraulic machinery, that is used for heaving mooring ropes or chain cable is called _____.
Capstan
When measuring gross tonnage, which space(s) is(are) NOT exempt ?
Cargo holds
As the propeller turns, voids are formed on the trailing and leading edges of the propeller blades causing a low in propulsive efficiency, pitting of the blades, and vibration. These voids are known as:
cavitation
The forming and bursting of vapour filled cavities or bubbles and occurs as a result of pressure variations on the back of the propeller blade, is called:
Cavitation
Loadline markings are set by what authority?
Classification societies
A deck fitting, used to secure line or wire rope, consisting of a single body with two protruding horns is called a :
Cleat
It is a void or empty space between two bulkheads or floors which prevents leakage from one to the other.
Cofferdam
What do you call the foremost major watertight bulkhead?
Collision bulkhead
What is the foremost major watertight bulkhead called?
collision bulkhead
Which cargo plan would you refer to show the ship’s profile and uses block spaces with the name of each commodity carried?
commodity stowage plan
If a vessel is loaded in such a manner that she is said to be sagging, what kind of stress is placed on the sheer strake?
Compression
When a ship sags, ________ stresses are set up in the deck.
Compressive
It is a type of propeller in which the blades are separately mounted on the boss and in which the pitch of the blades can be adjusted or reversed.
Controllable pitch propellers
What do you call the correction to be applied if the draft markings are not exactly in the perpendiculars?
Correction due to trim
In older ships, bell shaped fitting serving as deck opening to ventilation ducts is called:
cowls
The system of valves and cargo lines as the bottom piping network of a tanker that connects one section of cargo tanks to another sextions is called a _______.
Crossover
The __________ ensures adequate resistance to any pounding stresses which may occur and are fitted with solid plate floors at every frame space and a heavy centerline girder is fitted below each decks in the stern.
Cruiser stern
It is a report made when cargo sustained damage during the loading process.
Damage report
The inward curvature of the ship’s hull above the waterline is called:
deadrise
The actual weight of a vessel’s cargo, ballast, fuel oil, fresh water including her constant and expressed in tons is termed:
Deadweight
The cargo carrying capacity of a vessel is indicated by:
deadweight
This provides a method for estimating the additional draft or determining the extra load that can be taken on board when a vessel is being loaded in water of less than that of salt water.
Deadweight scale
The vertical distance from the upper edge of the deckline to the center of the disk of the loadline mark is known as _______.
deck
The deck plating are placed on a foundation that runs athwarthship from side to side of the vessel. This is the:
deck beam
The strength of the deck will be increased by adding _______.
Deck beam brackets
Adding which of the following will increase the strength of the deck?
deck beam brackets
In order to determine the weight capacity of a deck in a cargo hold, you must refer to the:
Deck capacity plan
To determine the weight capacity of a deck in a cargo hold, you would refer to the:
deck capacity plan
The horizontal platform which completes the enclosure of the hull and provide a solid working platform and acts as the watertight top cover to the hull structure:
Decks
When considering a vessel’s stability which spaces in a general cargo vessel are the best locations for the carriage of bulk grain?
Deep tanks
The plimsoll mark on a vessel is used to:
determine the vessel’s freeboard
Which is part of the ground tackle?
Devil’s claw
The height of the metacenter above the keel will vary depending on the:
displacement and deadweight of the vessel
The distance between the bottom of the hull and the waterline is called:
Draft
Limber is a term associated with:
drainage
The term “limber” is used with :
drainage
Which of the following terms is associated with “limber”?
drainage
Your vessel will be belt-gauged while in dry dock. This process involves:
drilling or sonic testing the hull to determine plate thickness
These are provided in the double bottoms of some vessels, these run from forward of the engine room bulkhead to the collision bulkhead and utilized to carry the double bottom piping.
Duct keel
The body plan of a vessel is a/an:
Endwise view of the ship’s molded form
The immersed body of the ship’s forward of the parallel middle body is called:
Entrance
What term indicates the immersed body of the vessel forward of the parallel mid-body?
Entrance
In order to strengthen the deck of a vessel for carriage of deck cargo, which of the following should be done?
erecting vertical pillars under the deck to support the cargo
It is possible and sometimes necessary to strengthen the deck of a vessel for carriage of deck cargo by:
Erecting vertical pillars under the deck to support the cargo
Structural stress can be reduced by:
even and symmetrical variable loading
Wale shores would be used when drydocking vessel with:
excessive deadrise
The depth of the ship from the upper deck to the underside of the keel is called?
Extreme depth
This weld should be used to attach stiffeners to a plate.
Fillet welds
What do you call the welds used to attach stiffeners to a plate?
fillet welds
A wooden plug fitted tightly in the vent of a damaged tank may prevent the tank from ______?
Filling completely
What is fitted in the airtight flat beneath the ventilators used to shut off air outlet from the engine room in case of fire?
fire flap
What is the term used for the outward curvature of the hull above the waterline?
flare
The outward curvature of the side shell above the waterline and promotes dryness and associated with the fore end of the ship is called :
Flare
What term indicates the outward curvature of the hull above the waterline?
flare
At the center line of the bottom structure is located the keel, which is reffered to as the backbone of the ship. The commonest form of keel and fitted in most ocean going vessels are called ______?
Flat plate keel
Baseline is the term that indicates the line drawn at the top of the:
flat plate keel
Aboard ship, vertical flat plates running transversely and connecting the vertical keel to the margin plates are called :
Floors
Which arrangement of shell plating is used MOST in modern shipbuilding?
flush
Panting frames are located in the :
fore and after peak tanks
This structure comprises the stem, bolbous bow, chain locker, hawse pipe and bow thruster.
Fore end structure
It is a watertight compartment between the foremost watertight bulkhead and the stem.
Fore peak
An imaginary line drawn perpendicular to the waterline at the point where the forward edge of the stem intersects the summer loadline is called:
Forward perpendicular
What provides the majority of strength to an aluminum-sided container?
Framework, primarily the corner post
The primary purpose of a load line is to establish required:
freeboard
The vertical distance measured at the ship’s side between the summer loadline or service draft and the main continuous deck is called:
Freeboard
The distance between water line of a vessel and the main deck is called:
Freeboard
The vertical distance measured from the upper edge of the deckline to the waterline is called _______.
freeboard
The uppermost deck having permanent means of closing all openings in the exposed portions of that deck are called:
Freeboard deck
What do you call the holes in the bulwark, which allow deck water to drain into the sea?
Freeing ports
The distance between the upper edge of the “Summer Load Line” upward to the upper edge of the “Freshwater Load Line” is known as the:
Fresh Water Allowance (FWA)
Shell plating that has curvature in two directions and must be heated and hammered to shape over specially prepared forms is called:
furnaced plate
On a single-screw vessel, a function of the stern frame is:
furnishing support to the rudder, propeller shaft and transom frame
The application of welding to shipbuilding is almost entirely in what kind of welding in the form of metallic-arc welding?
fusion welding
What is the first strake out from the keel?
Garboard strake
Which plan would you refer to locate various cabins on board a vessel?
General arrangement plan
The ring, lines and letters of a load line must be:
glued on the ship’s side
What is the fitting that allow booms to move vertically and laterally?
Gooseneck
A large basin cut into the shore, closed off by a caisson, and used for drydocking of ships is known as a:
Graving dock
It is the measure of the internal capacity of the ship.
Gross tonnage
The volume of under deck tonnage plus spaces in the hull above the tonnage deck divided by 100 cubic feet or 2.83 cubic meters to indicate one ton is termed as ______.
gross tonnage
The rudder post is equipped with projecting lugs that support it. These are called:
gudgeons
The projecting lugs of the rudder post which furnish support to the rudder are called:
gudgeons
The opening in the deck that leads the anchor cable outside the hull is the :
hawse pipe
For a vessel with no sheer, which of the following will not provide extra buoyancy?
higher bulkwar
Which would not provide extra buoyancy for a vessel with no sheer?
Higher bulwark
Your vessel’s draft forward is 11.2 meters aft 11.6 meters and mid 11.5 meters, what kind of stress affects your vessel?
Hogging
The waterplane area is described as the intersection of the surface of the water in which the vessel floats and the:
Hull
In ship construction the term “strake” is commonly used in reference to _____.
hull plating
The term “strake” is used in reference to:
hull plating
Camber in a ship is usually measured in:
Inches per feet of breadth
Which of the following is NOT included in the surveys for maintenance of class?
initial survey
To assess the potential for progressive flooding aboard a damage vessel, you must know the _______.
integrity of the watertight boundaries
What does a watertight equipment mean?
It is an enclosed equipment so constructed that steam of water from those under a head of 35 ft. can be played on the apparatus without leakage
Which is an advantage of using watertight longitudinal divisions in double bottom tanks?
It reduces free surface effect
In riveted construction, the use of liners is eliminated by using __________.
Joggled construction
The use of liners in riveted construction is eliminated by using:
joggled construction
In ship construction, the centerline plate passing from the stem to the stem frame is called:
Keel
These run along the center line of the bottom plating of the ship and for the majority of merchant vessels is of flat plate construction.
Keel
The garboard strake is the strake next to the:
keel
Which of the following weld faults can only be detected by a method that examines the internal structure of a weld:
lack of penetration
The type of joint formed when an edge of one plate is laid over the edge of the plate to which it is riveted is a:
Lap joint
What term indicates the length measured along the summer load line from the intersection of the loadline with foreside of the stem and the intersection of the loadline with the after side of the rudderpost?
Length between perpendiculars
A deck beam does NOT ______.
Lessen the longitudinal stiffness of the vessel
Where a ship is classed for the carriage of heavy, or ore cargoes, ______ framing is adopted for the double bottom?
Longitudinal
The frame of the vessel that runs parallel to the keel is called:
longitudinal frame
Transverse frames are more widely spaced on a ship that is designed with the:
Longitudinal system of framing
A vessel having a continuous and closely spaced longitudinal strenght member is said to be:
longitudinally framed
Transverse frames are more widely spaces on a ship that is designed with the _________.
longitudinal system of framing
What is a cofferdam?
made by placing two bulkheads a few feet apart
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 _______.
manger
It is the fore and aft plate site at the turn of the bilge.
Margin plate
The term “scantling” refers to the:
measurement of structural member
Buckler plates are:
metal plates secured over the tops of the hawsepipes
What term indicates the midships portion of a vessel that has a constant cross section?
middle body
Which of the following terms indicates the midship part of the ship that has a constant cross section?
middle body
Usually, rivets are made of what kind of material?
Mild steel
What term indictes that the dimension is measured from the inner face of the shell or deck plating?
Molded
The measurement from the baseline to the summer loadline at the midship section is called :
moulded draft
The “garboard strake” is the row of plating :
nearest the keel
It is the measure of the earning or useful capacity of the ship.
Net tonnage
What is the difference between net tonnage and gross tonnage?
Net tonnage is the gross tonnage less certain deductile spaces
How do you differentiate the gross tonnage from the net tonnage?
net tonnage is the gross tonnage less certain deductions
What is the difference between net tonnage and gross tonnage?
Net tonnage is the gross tonnage less certain deductions
A tonnage tax is leveled according to the:
Net tonnage of the vessel
A tonnage tax is levied according to the:
net tonnage of vessel
On the cargo manifest, the weight of the cargo inside a consider is called:
net weight
How many tarpaulins should be used when battening down a conventional cargo hatch?
not less than three
Causes of shipboard fractures are primarily:
notches and notch-sensitive steel
What are the circular steel structures that are installed around the propeller of a towboat?
nozzles
The circular steel structures that are installed around the propeller of a towboat are the _________.
nozzles
The pitch of a propeller is a measure of the:
number of feet per revolution the propeller is designed to move in still water without slip
What type of stem tube bearing has the least friction?
oil-lubricated bearing
What type of stern tube bearing has the least friction?
Oil-Lubricated bearing
The vessel’s quarter is located _______.
on either side of the stern
A vessel has an amidships superstructure. Which location would be most suitable for main deck stowage of vehicles?
on top of the hatch immediately aft of the midships house
Tensile stress is a result of two forces acting in:
Opposite directions on the same line tending to pull the material apart
The “margin plate” is the ______.
Outboard strake of plating on each side of an inner bottom
What is the term that applies to the bottom shell plating in a double bottom ship?
outer bottom
A term applied to the bottom shell plating in a double-bottom ship is :
outer bottom
It is a term applies to the bottom shell plating in a double bottom ship is :
Outer bottom
Ordinarily, the use of the bow thruster becomes ineffective at what speed?
over 3 knots headway
It is a method of welding that is used mainly in cutting steel.
Oxy-Acetylene Welding
The movement of waves along a ship causes fluctuations in water pressure on the plating, this tends to create an in-out movement which is known as:
Panting
The vessels structure foreside the collision bulkhead is stiffened to resist:
panting and pounding
What is called the length over which the midship section remains constant in area and shape?
Parallel middle body
The strictest load line regulations apply to what type of vessel?
passenger ships
The smallest size of flaw that can be detected on a radiograph examination of a weld will be indicated by the:
penetrometer
It is the amount of water that can enter a compartment or tank after it has been bilged.
Permeability
What do you call the percentage of the volume of a compartment which can be occupied by water if flooded?
Permeability
The percentage of the total surface area or volume of a flooded compartment that can be occupied by water caused by damage is known as:
Permeability
The maximum length allowed between main transverse bulkheads on a vessel is referred to as the:
permissible length
The structural member indicated by the letter F is known as a(n):
Pillar
The numerous post fitted throughout the vessel, their use is to give vertical support to girders, deck beams and heavy concentrated loads are called :
Pillars
This provide a means of transferring loads between decks and fastening together the structure in a vertical directions.
pillars
It is the distance that a ship moves forward with each revolution of its propeller.
pitch
The distance between rivets in a row is known as the:
Pitch
Which process would you employ to cut aluminum and stainless with argon mixture?
Plasma-arc process
The welds used to attach stiffeners to a plate are known as:
plate welds
It is a disk with horizontal line through its center equivalent to the summer load line.
plimsol mark
You are taking soundings at a tank opening where fumes may be present, what is the safest procedure that is to be taken?
Position yourself to windward of the tank opening
Beams are cambered to:
provide drainage from deck
In ship construction, what is the reason beams are cambered?
provide drainage from deck
The function of a chock on a vessel with a solid bulwark is to:
provide openings through the bulwark for mooring lines
What is the purpose of a striker plate?
Provides landing surface for sounding bob
If you are going to _____________, the wooden plug inserted in the vent of a damaged tank should be removed.
pump from the damaged tank
To control progressive flooding is by securing watertight boundaries and __________.
pumping out flooded compartments
The deck beam brackets of a transversely framed vessel resist:
Racking stresses
In a membrane containment system (LNG carrier design), what distinctive shape best describes the cargo tank cover above deck?
rectangular trapezoid shaped
What is NOT an advantage of ship construction method using welded butt joints in the shell plating?
Reduce plate stresses
Bilge keels are fitted on ships to ______.
reduce the rolling of the vessel
What is the main purpose of the bulbous bow fitted?
Reduce the ship’s resistance
In a vessel’s construction, frame spacing is ______.
Reduced at the bow and stern
In ship construction, frame spacing is :
reduced at the bow and stern
Which of the following is not an advantage of ship construction using welded butt joints in the shell plating?
Reduces plate stress
The construction of the bilge keel is for the purpose of:
reducing rolling
Which of the following does not affect the value of the free surface correction?
registered tonnage
Keeping the draft at or below the load line mark will insure that the vessel has adequate ______.
Reserve buoyancy
The vertical distance between the bottom at the centerline and the bottom at any given point is called:
Rise of bottom
What term indicates the vertical distance between the bottom at the centerline and the bottom at any given point?
Rise of bottom
It is the height of the bottom shell plating above the base line measured at the moulded beam line.
Rise of floor
Bilge keel are more effective at dampening rolls as the:
rolling increases
The garboard strake is the _______.
row of plating nearest the keel
A “contra-guide” is a type of:
rudder
The term “pintle” and gudgeon” are associated with the:
Rudder
The horizontal flat surface where the upper stock joins the rudder are called:
rudder palm
The terms “pintle” and “gudgeon” are associated with what part of the vessel?
Rudders
What term indicates the immersed body of the vessel aft of the parallel mid-body?
Run
The normal tendency for a loaded tanker is to:
Sag
What is the normal tendency for a loaded tanker?
Sag
It is a kind of stress when high buoyanct forces occur at the extremities of the ship.
Sagging
Your vessel’s draft forward is 10.8 meters aft 11.50 meters and mid 11.20 meters, what kind of stress affects your vessel?
Sagging
It is the joint formed when two steel shell plates are placed longitudinally side to side.
Seam
These are rudders which have a small proportion of their lateral area forward of the turning axis or less than 20 percent.
Semi-balance rudders
When one hold is empty and the other is full, opposing forces are acting on the hull girder in the transverse bulkhead, the stress caused by the opposing forces in the side plating. What kind stress is this?
Shearing
The stress brought about by the uneven distribution of weights along the entire length of th vessel is called:
shearing
Uneven distribution of weight along the entire length of the vessel is the result of stree known as:
Shearing
A stress within a material which tends to break the material across.
Shearing stress
What term indicates a curvature of the decks in a longitudinal direction?
Sheer
The term used for the rise in the deck line from amidships to the forward and after ends of the vessel.
Sheer
It is the strake of side plating nearest to the deck.
Sheer strake
These are steel plates of various sizes, which when joined together from the sides of the ship hull.
Shell plating
The greatest contribution to the longitudinal strength of the ship’s superstructure is provided by:
Shell platings
When a vessel goes into dry-dock, the information on the location of the blocks is contained in the ___.
Ship’s docking plan
The best information on the location of the blocks when drydocking a vessel is contained in the ______.
ship’s docking plan
The sheering stress on a ship’s structure are usually GREATEST at:
ships quarter length points
The method of strengthening damaged bulkheads by using wood or steel.
shoring
What is a sheer plan?
Shows a longitudinal side elevation
Seam is the joint formed when two steel shell platings are placed longitudinally:
side to side
A vessel has how many degrees of freedom?
six
Which of the following materials have the best ability to withstand sub-zero cryogenic temperatures?
stainless steel
What is the difference between the static and dynamic forces acting on the ship’s hull?
Static forces are set up by the cargo and the sea, and dynamic forces are set up by the sea wave action
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:
stealer plate
Owing the greatest 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 _______.
stealers
In the framing system, the term “cant frame” and “counter” are associated with the vessel’s ______.
Stern
The terms “cant frame” and “counter” are associated with part of the vessel?
Stern
In ship construction, larger castings which are made from carbon or carbon manganese steels are mainly used for:
Stern frames
A _______ forms the after bearing of the propeller shaft and incorporates the watertight gland through the intact hull?
Stern tube
The vertical structural members attached to the floors that add strength to the floors are called:
Stiffeners
Vertical structural members attached to the floors that add strength to the floors are called _______.
Stiffeners
What do you call the reinforcing frames attached to a bulkhead on a vessel?
Stiffeners
Reinforcing frames attached to a bulkhead on a vessel are called:
stiffeners
The bending moments acting along the longitudinal vertical planes is called:
Still water bending moments
The type of joint formed when a third small plate is riveted over two plates butted together is called ______.
strap joint
The type of joint formed when an edge of one plate is laid over the edge of the plate to which it is riveted is a ________.
strap joint
To shore up the main deck for the stowage of deck cargo means to:
strengthen the main deck by placing pillars underneath it
A term applied to a fore and aft girder running along the side of the ship and also to the outboard strake of plating on any deck is :
Stringer
The fore and aft run of deck plating which strengthens and connection between the beams and the frames and keeps the beams square to the shell is called the:
stringer strake
How do you call this welding process wherein a consumable filler wire is employed and the arc is maintained by a wire and patent wire?
Stud welding
The vertical distance between the center of the ring and the upper edge of the deck line is called:
Summer Freeboard
The objective of shorting a damaged bulkhead is to :
support and hold the area in the damaged position
No pulley block, unless clearly stamped with ______________, shall be used in hoisting or lowering.
SWL
What welding pattern is NOT used to permanently attach a stiffener to a plate?
tack
The terms “ceiling” and “margin plate” are associated with the:
Tank top
When a ship sags, ________ stresses are set up in the bottom shell plating.
Tensile
It is the single stability criterion with reference to metals, it is a measure of the materials ability to withstand loads upon it in service.
Tensile strength
When a vessel is stationary and in a hogging condition, the main deck is under which type of stress?
Tension
A vessel that is stationary and in hogging condition experiences what stress on its main deck?
Tension stress
Ultrasonic testing is used to determine the thickness of a vessel’s shell plating and to:
test welds for subsurface defects
Why are most break bulk vessels built with the transverse framing system rather than the longitudinal system?
The deep web frames interfere with the stowage of break bulk cargo
Moulded dimensions refers to :
The inside of the plating of the ship
Shell plating is :
the outer plating of a vessel
The shearing stresses on a ship’s structure are usually greatest at _____.
the ship’s quarter-length points
The “grip” of a rivet represents:
The thickness of the connected members
Shearing is the stress caused by:
the uneven distribution of weight all along the entire length of the vessel
Sometimes it is desirable to connect a member both by riveting and welding. Which statement is true concerning this procedure?
The welding must be completed before the riveting commences
How are double bottom ballast tanks filled?
they are gravitated in
What is NOT an advantage of double bottom ships?
They are less expensive to construct because of increased accomodation space
What does the “grip” of a joint represent?
Thickness of the connected members
What is the function of a carling?
To act as a boundary stiffener for the hatches
What is the purpose of a Plimsoll mark on a vessel?
to determine the vessel’s freeboard
What is purpose why Kort nozzles are installed around the propellers of some vessels.
To increase the thrust of the propeller
What is the pupose of the battens which are fitted in cargo holds across the frames of the vessel?
to prevent cargo from coming into contact with the vessel’s frame or shell plating
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/an:
Tonnage opening
A direction at right angles to the centerline of the ship or an item of structure in this position is called a/an:
Transverse
The ______ framing of the shell plating consisting of vertical stiffeners, web frames which are attached by brackets to the deck beams and the floor structure.
Transverse
A vessel having a continous closely spaced transverese stength members is said to be:
transversely framed
What is the term used for the inward curvature of the ship’s hull above the waterline?
Tumble home
What term indicates the outward curvature of the hull above the waterline?
Tumblehome
Which of the following types of weld testing can be used to detect any internal flaw?
Ultrasonic
These are rudders that have the full area aft of the axis.
Un-balance rudders
For a bulk carrier, which of the below structure is considered critical?
Upper and lower connections of the main side frames
What is the half-breadth plan?
Usually drawn for the port side only
What is NOT a requirement of a vessel to be dry-docked?
verification of loadline measurements
Gross tonnage indiates the vessel’s:
volume in cubic feet
The enclosed area defined as the intersection of the surface of the water and the hull of a vessel is the:
Water plane
Latches are fighting used to secure:
watertight doors
In a longitudinally-framed ship, the longitudinal frames are held in place and supported by athwartship members called:
Web frames
In a transversely framed ship, the transverse frames are supported by all of the following EXCEPT:
Web plates
The term used for the fusion of two metals together by the application of heat resulting in a joint which is stong or stronger than metals being joined.
Welding
Which of the following statements is true concerning repairs on the hull of a vessel which is to be riveted and welded?
Welding must be completed before the riveting begins
Which statement about tunnel bow thrusters fitted to large vessels is TRUE?
when going astern at slow speed, they provide effective steering control
How are the ring, lines and letters on a load line mark be painted?
white or yellow on a dark ground
A vessel is described as a two compartment vessel when it:
will float if any two compartments are flooded
It is the load line mark which is ¼ inch per foot of the Summer Draft lower than “S”.
Winter
You are bound from “port A” governed by the summer load line mark to “port B” also governed by the summer mark. The great circle track will take you into a zone governed by the winter mark. Which statement is TRUE?
You must be at the winter mark when you enter the winter zone and cannot exceed the summer mark after departing port A
