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2. Stays (nautical) - Wikipedia

   en.wikipedia.org/wiki/Stays_(nautical)

   14 – spinnaker pole 15 – backstay 16 – forestay 17 – boom vang Stays are ropes, wires, or rods on sailing vessels that run fore-and-aft along the centerline from the masts to the hull, deck, bowsprit, or to other masts which serve to stabilize the masts. [1] A stay is part of the standing rigging and is used to hold a mast upright.

3. Spinnaker pole - Wikipedia

   en.wikipedia.org/wiki/Spinnaker_pole

   The spinnaker pole is rigged to run from the base of the mast, [1] where there is a special fitting for attaching one end of the pole, out to windward over the side of the boat. There, one of the control lines of whichever sail it is to be used with is run through a fitting on the other end of the spinnaker pole. This allows for more precise ...

4. Punt (boat) - Wikipedia

   en.wikipedia.org/wiki/Punt_(boat)

   The basic technique of punting is to shove the boat along with a pole by pushing directly on the bed of the river or lake. In the 1870s, when punting for pleasure first became popular, the normal approach was for the passengers to sit at the stern on cushions placed against the till, and for the punter to have the run of the rest of the boat.

5. Bow visor - Wikipedia

   en.wikipedia.org/wiki/Bow_visor

   These doors are an upper extension of the collision bulkhead and act as a secondary barrier against water entering the car deck, should the primary bow door(s) fail. There have been several recorded incidents in which bow visors have partially opened whilst the ship is in motion, resulting in some ships having to have their visor locking ...

6. Ship motions - Wikipedia

   en.wikipedia.org/wiki/Ship_motions

   The turning rotation of a vessel about its vertical/Z axis. An offset or deviation from normal on this axis is referred to as deviation or set. This is referred to as the heading of the boat relative to a magnetic compass (or true heading if referenced to the true north pole); it also affects the bearing.

7. Lock (water navigation) - Wikipedia

   en.wikipedia.org/wiki/Lock_(water_navigation)

   A plan and side view of a generic, empty canal lock. A lock chamber separated from the rest of the canal by an upper pair and a lower pair of mitre gates.The gates in each pair close against each other at an 18° angle to approximate an arch against the water pressure on the "upstream" side of the gates when the water level on the "downstream" side is lower.