đ Key Concepts
⢠Cargo securing manuals and guidelines for deck cargo
⢠Properties of steel, wire, fiber, and chain when exposed to sea, weather, and shock loads
⢠Requirements for strength, stretch, and resistance to chafe and moisture in lashings
đ Think About
⢠Which material is most likely to weaken quickly when exposed to seawater, sunlight, and abrasion over a long voyage?
⢠Which materials are commonly seen as permanent or semiâpermanent securing gear on deck for heavy loads?
⢠For heavy deck cargo, do you want a lashing that stretches a lot or very little when the vessel rolls and pitches?
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Before You Answer
⢠Eliminate materials that are known to be used routinely for heavy-duty lashings on ships and barges
⢠Consider which option is most affected by rot, UV damage, and chafing in a marine environment
⢠Ask yourself which material is most likely to part if the vessel experiences heavy weather and large dynamic loads