The mainsail is the largest sail on a sailboat and is responsible for generating the primary driving force that propels the boat forward.

Sweep rowing is a rowing technique where both oars are pulled simultaneously, with the blades entering and exiting the water at the same time.

The daggerboard is a retractable blade that is lowered into the water to help the sailboat tack into the wind, preventing it from slipping sideways.

The power stroke is a rowing stroke that is used to accelerate the boat quickly by applying maximum force to the oars.

Close-hauled is the term used to describe the angle at which a sailboat is sailing into the wind, typically between 30 and 45 degrees.

Wearing a life jacket is essential for rowers during competitions to ensure their safety in case of an accident or capsize.

Gybing is the technique used in sailing to change direction without tacking, by shifting the boom and sails from one side of the boat to the other.

The handle is the part of the oar that is used to grip and control it during rowing, typically located at the top of the shaft.

Tacking is the term used to describe the point at which a sailboat changes direction by turning its bow into the wind.

Sculls are commonly used for recreational rowing, as they are designed for single rowers and are relatively easy to learn.

Reefing is the term used to describe the act of reducing the sail area on a sailboat, typically done to reduce wind resistance in strong winds.

Sculling is a rowing technique where a single oar is held in both hands and moved alternately in a figure-of-eight motion.

The rudder is a flat, underwater surface that is used to control the direction of the boat by turning it left or right.

Wearing a life jacket is essential for sailors to carry on board their boat to ensure their safety in case of an accident or capsize.

Running is the term used to describe the point at which a sailboat is sailing directly downwind, with the wind coming from behind the boat.