are noaa charts in feet or fathoms?
309117
They show how deep the water is at that point. Large block letters at the top and bottom of the chart indicate the unit of measurement used for soundings. So NOAA SOUNDINGS can be in FATHOMS (1 Fathom = 6 feet), FEET, or METERS (1 Meter = 3.28 feet).
364011
['Column Chart.', 'Line Chart.', 'Pie Chart.', 'Doughnut Chart.', 'Bar Chart.', 'Area Chart.', 'XY (Scatter) Chart.', 'Bubble Chart.']
872176
"naut / naus / nav" relating to the sea, ships, or travelers.
1398324
Fathometer is used to measure Ocean depth. Fathometer is a depth finder that uses sound waves to determine the depth of water.
563315
['Indian Ocean Gyre (generally flowing counter-clockwise)', 'North Atlantic Gyre.', 'North Pacific Gyre.', 'South Atlantic Gyre.', 'South Pacific Gyre.']
989362
Hawaii actually has very little variation between it's high tide and it's low tide. Some areas have ten feet or more tidal difference in water heights.
602606
There are no square feet in one foot. A square foot is a measure of area, two multiplied linear dimensions. A foot is one linear dimension, not an area.
127911
['distance from the sea.', 'ocean currents.', 'direction of prevailing winds.', "shape of the land (known as 'relief' or 'topography')", 'distance from the equator.', 'the El Niño phenomenon.']
286871
Your Lowrance, Simrad or B&G All Lowrance, Simrad and B&G displays are compatible with the full range of Navionics chart cards: Navionics+, Navionics Updates, Platinum+ and HotMaps Platinum.
642299
There are two main types of sensors used to measure sea surface elevation, pressure sensors and buoys. Pressure sensors are mounted at a fixed position underwater, and they measure the height of the water column that passes above them.
1102723
Storm Warnings? The Coast Guard announces storm warnings and other urgent marine information broadcasts on VHF channel 16 before making the broadcasts on VHF channel 22A and 2670 kHz respectively. Storm warnings and forecasts are also made by NOAA Weather Radio.
1315283
There are five major gyres: the North and South Pacific Subtropical Gyres, the North and South Atlantic Subtropical Gyres, and the Indian Ocean Subtropical Gyre.
1437961
Since the International Yard and Pound Agreement of 1959, one foot is defined as 0.3048 meter exactly. In customary and imperial units, one foot comprises 12 inches and one yard comprises three feet .
1398848
Relative sea level (abbreviated as RSL) is defined as the sea level that is observed with respect to a land-based reference frame. It is often contrasted with eustatic sea level, which is a measure of the total mass or volume of the oceans.
1259073
Higher than normal high tides and lower than normal low tides will occur. Mean sea level is generally higher in the early fall months in the Mid Atlantic due to warmer, expanding ocean water and changes in weather patterns.
402319
Fatheads prefer a temperature range of 50-70F. They can tolerate warmer temps for awhile, but they are much more able to handle cooler water than warmer.
767307
Nautical publications and marine charts are now available in electronic format can be used in conjunction with Marine GPS. This offers boaters an extremely high degree of navigation certainty. Keep in mind that Marine GPS may only be accurate to within 30m.