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Degrees and minutes/seconds/back and forth
Whole number --> degrees
Remainder * 60 --> minutes
Remainder of minutes * 60 --> seconds
1 degree=60NM
1min=1 NM
1s=1/60 of 1 min/NM
Tides
Spring tide:tidal effects of sun and moon act in concert
Neap Tide:tidal effects of sun and moon are in opposition to one another
Diurnal - one high and one low per day
Semidiurnal - two highs and two lows of roughly equal heights per day Mixed - two highs and lows, varying heights
Equipment to measure range
Stadimeter, GPS, laser range finder, radar
feet in fathom
6
Course up heads up north up-what do we use
north up
Which watchestander on bridge director controls movement of the ship via helm
helsmman
2 colors of sidelights-and which side are they on
red-port-left. green-star-right
Longitude and latitude line directions
latidue-across
long-up/down