Close link chain of not less the 3/4" (or the wire rope equivalent) is required for lashing deck cargoes of timber. What size flexible wire rope would provide the strength equivalent to 3/4" chain, using a safety factor of 5?

Correct Answer: Option B — 1"

In accordance with standard cargo securing manuals and maritime engineering tables, a 1-inch flexible wire rope provides the equivalent breaking strength of a 3/4-inch close-link chain when applying a standard safety factor of 5. This equivalence is vital for maintaining the structural security of heavy deck cargoes like timber.