The ___ davit is cranked outboard by large horizontal worm gear with a traveling nut.

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Multiple Choice

The ___ davit is cranked outboard by large horizontal worm gear with a traveling nut.

Quadrantal davits are driven by a large horizontal worm gear that uses a traveling nut to convert rotation into straight-line motion, pushing the arm outboard. As you crank, the nut travels along the worm, translating the rotary input into outward extension of the davit and lifting or lowering the boat cradle as needed. The worm-and-nut arrangement provides the necessary mechanical advantage and helps lock the arm in place once positioned. This setup distinguishes quadrantal davits from other types, which use different drive mechanisms such as sheathed screws, radial pivots, or single-point systems.

Quadrantal davits are driven by a large horizontal worm gear that uses a traveling nut to convert rotation into straight-line motion, pushing the arm outboard. As you crank, the nut travels along the worm, translating the rotary input into outward extension of the davit and lifting or lowering the boat cradle as needed. The worm-and-nut arrangement provides the necessary mechanical advantage and helps lock the arm in place once positioned. This setup distinguishes quadrantal davits from other types, which use different drive mechanisms such as sheathed screws, radial pivots, or single-point systems.

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