Transom

1. The transverse part of the stern. 2. Vertical section at the stern.

Tides

The vertical rise and fall of water caused by gravitational forces of the sun and moon.

Sea Anchor

Parachute shaped devise used in deep open water to keep a vessels bow into the wind and waves and reduce drift.

Scope

The ratio of length of anchor rode in use to the vertical distance from the bow of the vessel to the bottom of the water.

Roll

Alternating motion of a boat leaning alternately from port to starboard.

Radar

Electronic system to determine the position of objects at night and in reduced visibility.

Quay

A wharf or pier parallel to the water’s edge for loading and unloading cargo.

Port

Left side of the boat facing forward. (PORT and LEFT both have 4 Letters)

Pitch

1. Rise and fall of the bow as the vessel moves through the water. 2. The theoretical distance a propeller will advance forward in one revolution.

Pile

Pole usually wood driven into the bottom to be used to support a dock or aid to navigation.

Length Overall

(LOA) Length from the tip of the bow to the end of the stern not including anything bolted to the hull.

Knot

1. General term for a hitch or bend in a line. 2. One nautical mile per hour.

Keel

Main structural member beneth the hull to provide steering stability and reduce leeway.

Ebb

Out going (toward the sea) flow of tidal current.

Draft

The vertical distance from the water line to the lowest part of the boat.

Dolphin

Small group of piles sticking out of the water fastened together for strength.

Deadrise

The angle formed by a horizontal line at the keel and the angle of the bottom of the boat as it rises upward from horizontal.

Chock

U shaped fitting on the deck to position a mooring line.

Chine

The intersection of where the topsides and the bottom of the hull.

Chart

Detailed map of the waterway including land and buoys

Burgee

Small flag to indicate the identity of a club or organization

Breakwater

Structure built usually of rocks to create a protective barrier wall from heavy seas.

Bollard

Large strong fitting on dock usually iron used to fasten mooring lines.

Berth

1. Bed on board a boat. 2. A position where the vessel is made fast to a dock.