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Use the box below to search for a specific Term |
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| There are 98 entries in the glossary. |
| Pages: << < 1 2 3 4 5 6 7 > >> |
| Righting Arm | The theoretical measurement of force by which a heeled vessel is returned to upright by virtue of its displacement and gravity, expressed in foot/pounds, etc. |
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| Rip Tide | The rip tide is not a tide, it is a current. When waves hit the beach they hit at an angle and push water ahead of them. This water forms a current that flows parallel to the shore, called the longshore current. When the shape of the beach changes, or its direction (as in from North-South to Northeast-Southwest) the speed of the current changes. Locally this can cause more water to flow into an area than can flow out, and water will pile up. This is much like a traffic jam for the currents. However, the water, which is trapped next to the shore, cannot get out because of the longshore current. Eventually, so much water will pile up that it can break through the longshore current in a small area. The large amount of water rushing through a small break causes a strong current in a small area that flows perpendicular (away) from the shore. This is the rip tide. |
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| Rips | Short, steep waves caused by the meeting of currents. |
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| Rivet | A metal pin by which the plating and other parts of iron and steel vessels are joined. Rivets are known by their heads, such as: Flush, pan, snap, plug, tap, countersunk, mushroom, and swollen neck. |
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| Roach | A curve out from the aft edge (leech) of a sail. Battens are sometimes used to help support and stiffen the roach. |
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| Rocker | The upward curvature of the keel towards the bow and stern. |
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| Rode | The anchor line, cable or chain that connect the anchor to the boat. |
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| Rogue Knot | Seaman's name for a reef knot tied upside down. also called a "granny" knot. |
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| Roll | The alternating motion of a boat, leaning alternately to port and starboard; the motion of a boat about its fore-and-aft axis. |
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| Roller Furling | A method of storing a sail, e.g., by rolling the jib around the headstay. |
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| Roller Reefing | A system of reefing a sail by partially furling it. Roller furling systems are not necessarily designed to support roller reefing. |
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| Rolling Hitch | A hitch used for bending a line to a spar, which if tied properly, won't slip. The end of the line is passed around the spar and then passed a second time around so it rides over the standing part. Then it is carried across and up through the bight. |
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| Rooming | The navigable water to leeward of a vessel. |
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| Rope | Cabo
When rope comes aboard a vessel and is put to use, it is called line, although some still call it rope if it is over one inch in diameter. A coil of rope that is not designated for any particular use. |
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| Rope Yarn Sunday | A time during working hours granted by the Captain for the off-watch to attend to the condition of their clothing and other personal items, usually an easier day granted as a break from hard work. |
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