PART II: MATERIAL TECHNICAL BASIS FOR MARITIME TRANSPORT
Merchant ship
Merchant ship
Ship registration
Ship clasfication
The Plimsoll Mark
Merchant: Purpose: commercial, trading
Ship: for transportation
Ships need to be officially registered : VIRES in Vietnam, Lloyd’s in London, ABS in US,..
A UNIQUE code
Shipowner’s country - national flag
Foreign country - flag of convenience
Certificate of quality of the ship
By Classification Societies
To ensure : safety of passengers, crew, cargo and vessel
Survey has to take place every 4 years
Also called load line
maxium depth - legally loaded
Safety for seamen
Water zones
TF : Tropical freshwater load line
F : Freshwater loadline
T : Tropical zones load line
S : Summer load line
W : Winter load line
WNA : Winter North Atlantic
load line
Specifications of merchant ship
Draught (draft)
Displacement tonnage – LD & HD
Carrying capacity – DWC & DWCC
Register tonnage – GT & NT
Cargo space – CS
Coefficient of loading – CL
Dimension of the ship
Grain space/Gian capacity = 105% to 110% of the Bale
Unloaded cargo = light draft = Min draft
Loaded cargo = loaded draft = Max draft
A ship's deadweight is determined by load line
Weight of the ship= eight of water that it displaces
Depending: cargo load, season &water zone
Metric tons (MT)= 1000kg
Fomulas: D(MT) = M(cft)/35
Light displacement (LD) = the weight of empty ship + equipment + crew members & staff
Heavy/Loaded displacement (HD) = light displacement + weight of cargo loaded into the ship
Measured deadweight ton (DWT)
Deadweight capacity(DWC) = HD -LD
Deadweight cargo capacity (DWCC) = DWC - weight of fuel, stores, fresh water, equipment, ect
Measured cubic meter (Cbm), cubic foot (Cft) or register
Two type : Gross tonnage (GT)
Net tonnage ( NT)
CL = CS (Cft/m3) / DWCC (MT/ LT/ ST)
length over all (LOA)
Length between perpendiculars (LBP)
Length water line(LWL)
Beam
Classification of ships
Based on purpose of using
Based on size
Based on carried flag
Based on scope of business
Based on method of trading
NGUYỄN PHƯƠNG UYÊN - 22117983
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