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1. A horizontal steel beam which is attached to a crane wire and is used to spread lifting wires apart so they are vertically aligned to lift cargo safely and efficiently without bending or flexing. 2. Spreaders used for lifting containers have 4 remotely operated twist locks to attach to the corners of the container. 3. A bar on the mast of a sailboat used to keep lines apart and taut. 4. Small spars extending toward the sides from one or more places along the mast. The shrouds cross the end of the spreaders, enabling the shrouds to better support the mast. 5. Step of a pilot ladder which prevents the ladder from twisting. (IMO Standard Marine Communication Phrase)