Structures

Question 1

What is the deck?

Answer 1

• A horizontal watertight platform which encloses the hull.

- A solid working platform capable of supporting any loads resting on it.

Question 2

What is deck plating?

Answer 2

-Longitudinal strakes of plating across the width of the ship.

Question 3

What are types of deck structures?

Answer 3

• Hatchways
• Engine casing
• Pumproom

Question 4

How does deck stiffening occur?

Answer 4

• With longitudinal framing, a series of closely spaced longitudinals are used in addition to deep web transverses.
• With transverse framing, transverse deck beams are used at every frame space.

Question 5

What are deck beams?

Answer 5

• Beams are fitted across the width of the vessel and are joined to the side frames by brackets know as “beam knees”
• Longitudinal girders which run alongside the hatchways are fitted on the vessel.

Question 6

What is a Bullwark?

Answer 6

-Barriers fitted to the deck edge for the protection of passengers and crew and to avoid items being lost overboard if the ship is rolling excessively.

Question 7

What is the railings and their specifications?

Answer 7

• Unlike bullwalks, railings are set back from the edge.
• The max lower rail spacing is 230mm
• The max spacing for rails above the lower rail is 380mm