Chocks help to limit the motion of the engine and also dampen vibrations transmitted from engine to the tank top.
Main chocks are usually fitted beneath the longitudinal frame. Side chocks are fitted in line with the main bearings. End chocks two in number, are fitted at the aft end of the main engine.
Resin chocks
Anand Gautam is a marine engineer, Graduated from M.E.R.I. Mumbai. He likes to sail onboard ship and is one who is passionate about his job. He loves to share his knowledge, information, and ideas to everyone in a simplified way just for his satisfaction.
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I think that the metallic chockes have no effect on engine vibrations damping