All echo-sounders can measure the __________.?
A) actual depth of water B) actual depth of water below keel C) average depth from waterline to hard bottom D) average depth of water to soft bottom E)NULL
A) actual depth of water B) actual depth of water below keel C) average depth from waterline to hard bottom D) average depth of water to soft bottom E)NULL
A) a junction with the preferred channel to the left B) a sharp turn in the channel to the right C) the starboard side of the channel D) a wreck to be left on the vessel’s port side E)NULL
A) falls B) is steady C) is uncertain D) rises E)NULL
A) Horizon B) Hour circle C) Vertical circles D) Celestial meridians E)NULL
A) If the red ends of the magnets are aft, and the fore-and-aft tray is at the top, you should remove some magnets. B) If the red ends of the magnet are aft, and the fore-and-aft tray is at the…
A) Cold fronts move faster than warm fronts. B) Cold fronts move slower than warm fronts. C) Cold fronts and warm fronts move with equal speed. D) Cold fronts move slower at the northern end and faster at the southern…
A) whenever an estimated position is plotted B) when it agrees with your loran position C) when coming on or going off soundings D) at least every hour on the hour in the open waters of the sea E)NULL
A) the meridian through the object of the bearing B) the meridian through the ship’s position C) the meridian midway between the ship and the object D) any meridian E)NULL
A) ahead of the storm center B) in the dangerous semicircle C) directly behind the storm center D) in the navigable semicircle E)NULL
A) Fleet Guides B) Notice to Mariners C) Sailing Directions D) Pilot Charts E)NULL