Chinese English

The label of a numerical value used par­ticularly to refer to the N (north) or S (south) label of LATI­TUDE and DECLINATION. When LATITUDE and DECLINATION are both N or both S, they are said to be of the same name, but if one is N and the other S, they are said to be of contrary name.

A device used by oceanographers to obtain subsurface samples of SEA WATER. The bottle is lowered by wire; its valves are open at both ends. It is then closed 'in situ' by allowing a weight (called a MESSENGER) to slide down the wire and strike the rever­sing mecha­nism. This causes the bottle to turn upside down, closing the valves and reversing the REVERSING THERMOMETERS which are mounted in a special thermometer case on it. If, as is usually done, a series of bottles is lowered, then the reversal of each bottle releases another MESSENGER to actuate the bottle beneath it.

A DIAGRAM on which com­pass deviation is plotted for various HEADINGS, and the points connected by a smooth curve, permitting a ready conversion of deviations from compass to magne­tic HEADINGS, or vice versa.

A CHART specifically designed to meet the requirements of MARINE NAVIGATION, showing DEPTHS of water, NATURE OF BOTTOM, ELEVATIONS, configuration and characteristics of COAST, dangers and AIDS TO NAVIGATION. May be a paper chart, electronic navigational chart (ENC) or a raster navigational chart (RNC). Also called marine chart, hydrographic chart, or simply CHART. - 2. (From SOLAS Chapter V) A special-purpose MAP or a specially compiled database from which a MAP is derived, that is issued officially by or on the authority of a Government, authorized Hydrographic Office or other relevant government institution and is designed to meet the requirements of MARINE NAVIGATION.

1.专为满足航海要求而编制的海图，能够显示水深、底质、高程、海岸形态及性质、危险物和助航标志等内容。可以是纸海图、电子海图(ENC)或栅格电子海图(RNC)。亦称marine chart（海图）、hydrographic chart（水路图）或simply chart（简易海图）。 2．由政府当局、经授权的水文局或其他相关政府机构正式颁布的用于满足航海要求的专用图或专门编制的用于绘图的数据库（见SOLAS<国际海上人命安全>公约第5章）。

The short title for a geographical sea area (may include inland seas, lakes and waterways navigable by sea-going ships) established for the purpose of coordinating the broadcast of navigational warnings. The term NAVAREA followed by a roman numeral may be used to identify a particular sea area. The delimitation of such areas is not related to and shall not prejudice the delimitation of any boundaries between States.