nava

consists of a constellation of satellites transmitting radio signals to users.

it “controls” the GPS satellites by tracking them and then providing them with corrected orbital and clock (time) information

simply consists of you and your GPS receiver.

location on the earth measuring how far north or south one is

he location on the measured east or west

length measurement used in navigation and is 1/60 of 1 degree of equator

the depth from the transducer to the seabed

provide a draft -adjusted depth reading and will be useful in referencing to the nautical chart.

shows the time ,depth and own ship position in tabular form in a pop up window .

This is located on the navigational bridge. The display unit can be a paper recording type or digital display type. Main function of this unit is to record and display the depth after measuring