MARGIN LINE
- An imaginary line drawn parallel to the continuous bulk head deck not less than 76 mm
below.
- Denotes the max floodable limit – after which the ship would sink
MOULDED DEPTH
- Vertical dist from top side of the keel to underside of the deck x`
MOULDED BREADTH
- Horizontal distance b/w the outermost port and stbd inner platings
SHEER
- It‟s the longitudinal curvature of the deck from fore to aft
- Rising from midship to fore and aft
- Makes the vessel sea worthy by raising the deck and preventing green seas on the deck
SHEER STRAKE
- Strake means hull/plating
- Sheer strake means , a long continuous plate running on top of the main deck
STRAKE
(Kemp and Young pg 48)
- Shell plating extending from fwd to aft
- Named alphabetically starting from the strake adjacent to keel ( c,b,a – keel – a, b, c)
- And its numbered from aft. i.e., Port C 12 would mean , C STRAKE – PORT SIDE 12 – From the aft start counting from 1 , 2, … until 12 th strake
Thickness
- The thickness of the strake is the max at the mid ship (0.4L)
- And at the ends its (0.075L)
TUMBLE HOME
- The side shell of the ship towards the upper deck region curves towards the centre line of
the ship.
- No significant importance other than style.
CAMBER
- Transverse curvature of the deck from the mid ship lowering to the sides
- Enables drainage of water
GARBOARD STRAKE
- Strake‟s on either side of the keel is called Garboard strake
RISE OF FLOOR
- Rise of bottom shell plating above the base line
FLARE
- Outward curvature of the side plating
- Enables quick dryness
- That s why used in fwd mostly
KEEL
- These are members or series of members that run longitudinally at the base of ship
- Normally refers to the centre line
- Distributes local stresses equally when dry docked
- Main sct in giving longitudinal strength of the ship
Thickness
- The width of the keel = 70B
B = Breadth of the ship
- But limit should be 750 mm < keel width < 1800 mm
- Thickness should be = 2 mm GREATER than adjacent bottom plating
PARALLEL MIDDLE BODY
- Length over which the midship section remains constant in area and shape
ENTRANCE
- The immersed body of a vessel fwd to parallel middle body
RUN
- The immersed body of a vessel aft to parallel middle body
TONNAGE
- Measure of enclosed internal volume of a vessel
- 100 cubic feet = 1 ton
TEU AND FEU
- Indicates carrying capacity of container units
- An imaginary line drawn parallel to the continuous bulk head deck not less than 76 mm
below.
- Denotes the max floodable limit – after which the ship would sink
MOULDED DEPTH
- Vertical dist from top side of the keel to underside of the deck x`
MOULDED BREADTH
- Horizontal distance b/w the outermost port and stbd inner platings
SHEER
- It‟s the longitudinal curvature of the deck from fore to aft
- Rising from midship to fore and aft
- Makes the vessel sea worthy by raising the deck and preventing green seas on the deck
SHEER STRAKE
- Strake means hull/plating
- Sheer strake means , a long continuous plate running on top of the main deck
STRAKE
(Kemp and Young pg 48)
- Shell plating extending from fwd to aft
- Named alphabetically starting from the strake adjacent to keel ( c,b,a – keel – a, b, c)
- And its numbered from aft. i.e., Port C 12 would mean , C STRAKE – PORT SIDE 12 – From the aft start counting from 1 , 2, … until 12 th strake
Thickness
- The thickness of the strake is the max at the mid ship (0.4L)
- And at the ends its (0.075L)
TUMBLE HOME
- The side shell of the ship towards the upper deck region curves towards the centre line of
the ship.
- No significant importance other than style.
CAMBER
- Transverse curvature of the deck from the mid ship lowering to the sides
- Enables drainage of water
GARBOARD STRAKE
- Strake‟s on either side of the keel is called Garboard strake
RISE OF FLOOR
- Rise of bottom shell plating above the base line
FLARE
- Outward curvature of the side plating
- Enables quick dryness
- That s why used in fwd mostly
KEEL
- These are members or series of members that run longitudinally at the base of ship
- Normally refers to the centre line
- Distributes local stresses equally when dry docked
- Main sct in giving longitudinal strength of the ship
Thickness
- The width of the keel = 70B
B = Breadth of the ship
- But limit should be 750 mm < keel width < 1800 mm
- Thickness should be = 2 mm GREATER than adjacent bottom plating
PARALLEL MIDDLE BODY
- Length over which the midship section remains constant in area and shape
ENTRANCE
- The immersed body of a vessel fwd to parallel middle body
RUN
- The immersed body of a vessel aft to parallel middle body
TONNAGE
- Measure of enclosed internal volume of a vessel
- 100 cubic feet = 1 ton
TEU AND FEU
- Indicates carrying capacity of container units
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