General Arrangement Plan

1. General Arrangement Plan Lesson 2

2. General Arrangement Plan • depicts the division and arrangement of the ship • side view • plan views of the most important decks • cross-sections

3. The views and sections display: • division into compartments (tanks, engine room, holds) • location of bulkheads • location and arrangement of superstructure • parts of the equipment (winches, loading gear, bow thruster, life boats)

4. Basic data included in the GAP: • dimensions • volumes of the holds • tonnage • deadweight • engine power • speed • class

5. Spaces and separations

6. Spaces and separations a. upper deck or main deck (sep.) b. forecastle (sep.) c. tweendeck (sep.) d. tanktop (sep.) e. upper hold and lower hold (sp.) f. peak tank (afterpeak/forepeak) (sp./sep.) g. chain locker (sp.) h. bosun’s locker (sp.) i. peak-bulkheads (sep.) j. engine room (sp.) k. steering gear room (sp) l. double bottom (sp.) m. Cofferdams (sp./sep.) n. Superstructure (sp.)

7. a. Upper deck or main deck • the principal deck of a vessel • shelter for contents

8. b. Forecastle • foremost part of the upper deck • usually raised above the main deck • location of winches

9. c. Tweendeck • space between decks – intermediate deck • divides the vessel into separate holds

10. d. Tanktop • inside bottom of the vessel • the plating forming the inner bottom of a ship hull

11. e. Upper hold / Lower hold • spaces that contain the cargoes – storage space

12. f. Peak tank • foremost and aftermost spaces of the vessel • serve as storage spaces for ballast water • capable of absorbing part of the impact forces that are released in case of a collision –safety zone

13. g. Chain locker • storage space for anchor chain

14. h. Bosun’s locker • = Boatswain’s locker • serves as storage for ropes, paint and dunnage

15. i. Peak bulkheads • watertight collision separations • prevent the vessel from flooding in case of collision with another vessel • fireproof

16. j. Engine room • = machinery space • watertight compartment • houses the main and auxiliary machinery

17. j. Engine room • on a large percentage of vesselsengine room is located near the bottom, and at the aft • usually comprises few compartments - this design maximizes the cargo carrying capacity of the vessel and situates the prime mover close to the propeller, minimizing equipment cost and problems posed from long shaft lines

18. k. Steering gear room • location of steering gear • gives the power for moving the rudder

19. l. Double bottom • provides strength and storage space for fuel, lubricating oil, fresh water, salt (ballast) water and potable water

20. m. Cofferdams • separations – to prevent leaking • location of pumps

21. n. Superstructure • accommodation for the crew and passengers; • messroom, galley, pantry • wheelhouse

22. Shipboardterminology for positionin a ship • COLLOQUIAL TERM M.E. TERM • fore endforward • afterendaft • midshipspartamidships • right side starboard s. • left side port s. • infrontofbefore / forwardof • behindabaft / aftof • across (theship) athwartships • fromstem to stern fore andaft