With reference to transverse stresses in a vessel’s hull: (a) state the cause of the stress when the vessel is: (i) floating in still water;(1) (ii) being acted on by waves;(2) (iii) drydocked.(1) (b) state the areas where the stress is a maximum when the vessel is: (i) floating in still water;(1) (ii) drydocked;(1) (c) describe the structure that resists the stress.(4)
(a) Define the term sheer stress.(3) (b) Explain how the hull of a vessel may be subject to sheer stress in EACH of the following: (i) while in a seaway;(4) (ii) while in still water.(3)
(a) Explain what is meant by the term pounding as applied to a vessel being driven hard in a seaway.(3) (b) Explain how panting may often occur at the same time as pounding in heavy seas.(3) (c) Describe how the hull is strengthened to resist panting and pounding.(4)
With reference to a vessel’s hull: (a) explain the meaning of EACH of the following: (i) dynamic stress;(3) (ii) static stress;(3) (b) state TWO examples of EACH type of stress explained in part (a).(4)
With reference to longitudinal stresses in a vessel’s hull: (a) state the cause of the stress; (b) state the areas where the stress is a maximum; (c) describe the structure that resists the stress.
With reference to the application of protective coatings to a vessel’s hull: (a) state the functions that the coating should perform;(3) (b) state the legislation that applies to certain coatings and what certification is required to comply with it;(2) (c) outline the process for re-coating the hull of a vessel in drydock.(5)
With reference to a vessel’s hull: (a) state the meaning of the term racking;(2) (b) explain how racking occurs;(4) (c) state the structures that resist racking.(4)
With reference to stresses and strain in vessels, describe, with the aid of a sketch, EACH of the following: (a) panting;(2) (b) pounding;(2) (c) racking;(2) (d) hogging;(2) (e) sagging;(2)
