🔍 Key Concepts

• Quadrantal davit mechanics – how the quadrant, traveling nut, worm gear, and davit arm all connect and move when cranking out a boat • Effect of quadrant tooth wear/slippage – what actually moves if the teeth no longer hold properly • Direction of movement of the davit head – inboard vs. outboard when support at the quadrant is lost

💭 Think About

• Visualize the davit as you crank it out: which part is fixed, which part rotates, and which part slides along the worm gear? • If the quadrant suddenly slips because the teeth fail, what happens to the support under the davit arm – does the arm stay supported by the quadrant, or does it pivot somewhere else? • Which option describes a movement that could realistically result from loss of positive engagement between the quadrant teeth and the driving mechanism?

✅ Before You Answer

• Be clear which parts are rotating (quadrant/davit arm) and which are translating (traveling nut on the worm gear). • Check which answer choice mentions the davit head’s movement outboard and relates directly to the davit arm losing proper support. • Eliminate any option that suggests extra safety devices engaging if the teeth fail – ask yourself if those devices are actually designed to respond to quadrant tooth wear.