 J  |
| Jack Line, Jack Stay |
|
A strong line, usually of flat webbing, or a wire stay running fore and aft along the sides of a boat to which a safety harness can be attached.
|
|
|
|
| Jam Cleat |
|
A cleat designed to hold a line in place without slipping. It consists of two narrowing jaws with teeth in which the line is placed. Also see cam cleat.
|
|
| Jaws |
|
A fitting holding a boom or gaff to the mast.
|
|
| Jenny |
|
A genoa jib. A large jib that overlaps the mast.
|
|
| Jetty |
|
A man made structure projecting from the shore. May protect a harbor entrance or aid in preventing beach erosion.
|
|
| Jib |
|
A triangular sail attached to the headstay. A jib that extends aft of the mast is known as a genoa.
|
|
| Jib Netting |
|
A rope net to catch the jib when it is lowered.
|
|
| Jib Sheets |
|
A sheet (line) used to control the position of the jib. The jib has two sheets, and at any time one is the working sheet and the other is the lazy sheet.
|
|
| Jib Stay |
|
The stay that the jib is hoisted on. Usually the headstay.
|
|
| Jib Topsail |
|
A small jib set high on the headstay of a double headsail rig.
|
|
| Jibe |
|
Also spelled gybe. To change direction when sailing in a manner such that the stern of the boat passes through the eye of the wind and the boom changes sides. Prior to jibing the boom will be very far to the side of the boat. Careful control of the boom and mainsail is required when jibing in order to prevent a violent motion of the boom when it switches sides. Jibing without controlling the boom properly is known as an accidental jibe. tacking is preferred to jibing because the boom is not subject to such violent changes. Jibing is usually needed when running with the wind and tacking is used when close hauled.
|
|
| Jiffy Reefing |
|
A method of lowering the sail in sections so that it can be reefed quickly.
|
|
| Jigger |
|
A small sail on the mizzen mast of a yawl or a ketch.
|
|
| Junction Buoy |
|
Also known as a preferred channel buoy. A red and green horizontally striped buoy used in the United States to mark the separation of a channel into two channels. The preferred channel is indicated by the color of the uppermost stripe. Red on top indicates that the preferred channel is to the right as you return, green indicates the left. Also see can and nun buoys.
|
|
| Jury Rig |
|
A temporary repair using improvised materials and parts.
|
|
