[1]Sailing directions are kept up to date by ______.A. publicationsB. notices to marinersC. supplementsD. Annual Summary of Admiralty Notices to Mariners[2]Every new supplement to the Sailing Directions ______ the previous one．A. enforcesB. cancelsC. correctsD. replenishes[3]______ amplify charted detail and contain information needed for safe navigation．A. Admiralty Sailing DirectionsB. Admiralty List of LightsC. Admiralty List of SignalsD. Admiralty Notices to Mariners[4]The Admiralty Notices to Mariners can be obtained ______ by Masters of vessels from any Admiralty Chart Agent．A. free of chargeB. with no responsibilityC. without limitations of distributionD. with little charges[5]Owing to old data of the survey the positions and number of the beacons shown on this chart are not to be ______.A. consideredB. insuredC. relied uponD. suspected[6]No navigational aids are shown and the chart is not kept corrected for alterations in depths inside the pecked lines． For more detailed information，the larger scale charts must be ______.A. referred toB. appreciatedC. met withD. concerned[7]Navigational charts are subject to frequent changes，the important ones of which are promulgated by ______.A. Admiralty Notices to MarinersB. Mariner's HandbookC. CatalogueD. Sailing Directions[8]Charts are subject to frequent correction according to ______.A. Notices to MarinersB. Mariner's handbookC. Sailing DirectionsD. Guide to Port Entry[9]A chart has extensive corrections to be made to it. When these are made and the chart is again printed，the chart issue is a ______.A. first editionB. new editionC. revised editionD. reprint[10]______ are published for the correction of Admiralty Charts．A. Admiralty Sailing DirectionsB. Admiralty List of SignalsC. Mariner's HandbookD. Admiralty Notices to Mariners[11]______ is not contained in the NM Weekly.A. Amendments to Admiralty Sailing DirectionsB. Amendments to Admiralty List of Lights and Fog SignalsC. Amendments to Admiralty List of Radio SignalsD. Supplement to Guide to Port Entry[12]The heights and soundings of Admiralty chart are expressed ______ in Fathoms ______ in Meters．A. either，orB. neither，norC. another，norD. other，or[13]Admiralty Notices to Mariners are published ______.A. every dayB. every weekC. every monthD. every year[14]Admiralty Notices to Mariners，containing important information for the mariners and enabling them to keep their charts and books corrected for the latest information，are issued daily and published in ______.A. Weekly EditionsB. Quarterly EditionsC. Annual EditionsD. Monthly Editions[15]In revised editions of Admiralty charts the ______ are corrected first．A. smaller scalesB. larger scalesC. smaller scales and larger scalesD. moderate scales[16]Information for updating nautical charts is primarily found in the ______.A. Notice to MarinersB. Coast PilotsC. nautical chart catalogsD. Sailing Directions[17]Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by ______.A. Notices to MarinersB. Sailing DirectionsC. List of Lights and SignalsD. Guide to Port Entries[18]Periodic publications notifying changes in，or additions to，previously published navigational data are ______.A. SupplementsB. Annual SummaryC. Navigational WarningsD. Notices to Mariners[19]How is the intensity of a light expressed in the Light Lists? ______.A. Luminous rangeB. Geographic rangeC. Nominal rangeD. Meteorological range[20]The maximum distance at which a light may be seen under the existing visibility conditions is called ______.A. nominal rangeB. luminous rangeC. charted rangeD. geographic range[21]The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen ______.A. under existing visibility conditionsB. under perfect visibilityC. with ten miles visibilityD. with fifteen miles visibility[22]A MARK OR POSITION AT WHICH A VESSEL IS REQUIRED TO REPORT TO ESTABLISH ITS POSITION defines ______.A. VTS pointB. Way pointC. Reference pointD. Establishment point[23] On small-scale charts of ocean areas where hydrographic information is, in many cases, still ______, charted shoals may be in error as regards position, depth and extent.A. SpareB. SpadeC. SparseD. Spear[24]Bearing are true reckoned ______ in admiralty charts.A. Clockwise from 000 to 359 degrees.B. Clockwise from 359 to 000 degrees.C. Anti-clockwise from 000 to 359 degrees.D. Anti-clockwise from 359 to 000 degrees.[25] For full information regarding the current circulation of the Indian Ocean, ______ sailing direction, current atlas, etc.A. WatchB. Look forC. SeeD. Regard[26]A red pillar light-buoy，Fl(2) 5s，is to be substituted for the green conical light-buoy close S．W．of the stranded wreck． The above sentence mainly refers to ______.A. a red buoy is to be replaced by a green buoyB. a green buoy is to be replaced by a red buoyC. either a red buoy or a green buoy is to be replacedD. neither a red buoy nor a green buoy is to be replaced。