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Eng ID | Term | Definition |
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1121 | covers and uncovers (or discovers) | Expression intended to indicate an area of a REEF or other projection from the BOTTOM of a body of water which periodically extends above an... more |
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1122 | crab | The condition caused by failure to orient a CAMERA with respect to the TRACK of the airplane. In vertical PHOTOGRAPHY, crab is indicated by... more |
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1123 | crack | Any fracture or RIFT in SEA ICE not sufficiently wide to be described as a LEAD. |
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1124 | crag | A steep or precipitous rugged ROCK. |
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1125 | crater | Bowl-shaped cavity, at the SUMMIT or on the side of a volcano. |
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1126 | creek | A comparatively narrow INLET, of fresh or salt water, which is tidal throughout its whole course. A small TRIBUTARY. A small, narrow BAY whi... more |
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1127 | crescent | (adj.). See PHASES OF THE MOON. |
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1128 | crest | The highest part of a WAVE, SWELL, RIDGE, etc. |
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1129 | crib | A permanent marine structure usually designed to support or elevate pipelines; especially a structure enclosing a screening device at the of... more |
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1130 | critical sounding | The least depth in proximity to a known or potential navigational route. |
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1131 | cross bearings | Two or more BEARINGS used as intersecting LINES OF POSITION for fixing the POSITION of a craft. |
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1132 | cross hairs | See CROSS WIRES. |
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1133 | crossing angle | See ANGLE. |
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1134 | crosslines | Sounding lines that cross the main system of lines at either right angles or at an oblique angle to serve as a check on the accuracy of the ... more |
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1135 | cross lines of sounding | SOUNDING LINES run approximately at right angles to those of normal direction, frequently useful when examining SHOALS. Cross lines are also... more |
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1136 | cross sea | A series of WAVES or SWELL crossing another wave system at an angle. |
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1137 | cross section lines of soundings | SOUNDING LINES run in a SURVEY perpendicular to the FLOW of a STREAM and from BANK to BANK in a RIVER. |
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1138 | cross wind | WIND which blows in a direction perpendicular to that of the motion of a moving object, relative to the EARTH's surface. |
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1139 | cross wires (or hairs) | Wires or etched lines, at right angles, held at the FOCAL PLANE of an astronomical or sighting TELESCOPE. See also RETICLE. |
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1140 | cruise line of sounding | See TRACK LINE OF SOUNDING. |