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How can ships use ultrasound to detect the depth of water beneath them?
Wiki User
∙ 14y ago
Submarines use standard fathometers, though they're more powerful and more focused than most commercially available units, for depth measurement. The actual frequency used is classified, but it's in the upper Kilohertz range and short pulsed to minimize detection when used during submerged operations close to shore. Anything above 20khz is considered ultrasound.
In the deep ocean they're typically not used, as most boats rely on navigational charts for depth estimates. Most areas of the oceans are deeper than design limits of submarines anyway, so they're rarely used in deep water unless you need to verify a chart depth.
Wiki User
∙ 14y ago
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Which household item might use ultrasound?
A coffe machine
Can sonar use in periscope depth?
Yes sonar can be used at periscope depth. Surface ships also have sonar arrays on them. They are usually used to detect submarines.
Are ships easy to detect?
yes because they have their own magnetic fields due to which they can easily detect by the detecter
What do ships use to detect submarines?
Modern naval ships use some form of Sonar to detect submarines. Additionally, some ships are equipped with Magnetic Anomaly Detectors (MAD gear) that detect a submarine's impact on the Earth's magnetic field in that area. The gear is typically carried aboard helicopters temporarily stationed on the ship.
How did the US protect American shipping in the Atlantic in 1941?
By the use of U.S. NAVY convoys which escorted civilian cargo ships. If an attack came,the Navy would try to detect the U-boat(s) and drop depth charges to destroy them.
What have people specifically found with sonar?
Sonar is a way of finding things underwater, using the echo of sounds you emit. We have used it to find the shape of the lake/sea/ocean bottoms, to determine the depth of waters, to find fish, to locate ship wrecks, and to detect the presence of ships and especially submarines.
Do pelicans sleep?
standing up
What is a sonar used for?
Sonar is used to detect other vessels or ships/submarines through a tube-like device> Andrea
What is the depth of the wreck of the uss Indianapolis?
The location and information of the ships whereabouts are still classified by the United States Navy.
What were convoys used to do?
Convoys in WW1 were used to protect the merchant and troop ships coming to Britain, carrying food, ammunition and general supplies. The convoys comprised of a core of merchant ships (and sometimes Q-Boats, which were designed to be disguised as merchant ships, but had guns and depth charges to destroy U-boats) surrounded by navy ships, which guarded the merchant vessels. Some navy ships had hydrophones (a machine using radio waves to detect a U-boat under water.). They also went in a zig-zag route, to make it harder for the U-Boats to torpedo the ships.
Why do rivers go deeper even when ships don't use rivers?
Whether a ship uses a river does not affect the depth- the depth affects whether or not a ship can use the river. Depth is affected by water flow, and the terrain the river runs through.
How did Americans protect ships from German U-boats?
The use by British and the Americans of a convoy system (40-70 ships) and the development of more effective anti-submarine weapons such as depth charges and radar helped protect Allied merchant ships.
