Search results
Results from the WOW.Com Content Network
A depth charge is an anti-submarine ... Some Royal Navy trawlers used for anti-submarine work during 1917 and 1918 had a thrower on the forecastle for a single ...
The Mark VII depth charge was the primary British anti-submarine weapon until 1944 when the anti-submarine projectile launchers the Hedgehog spigot mortar and Squid three-barrelled mortar introduced in 1943 and 1944 proved more effective. [1]
Until depth-finding sonar became available (the first was the Royal Navy's Q attachment in 1943), there was a "dead period" during the final moments before a depth-charge attack began when contact with the target would be lost. U-boat commanders became adept at sharp course changes and direction speed at these moments to break contact and escape.
Early depth charges were designed to be rolled into the water off of the stern of a fast ship. The ship had to be moving fast enough to avoid the concussion of the depth charge blast. Later designs allowed the depth charge to be hurled some distance from the ship, allowing slower ships to operate them and for larger areas to be covered.
After World War I depth charge throwers were developed, which could hurl depth charges some 100 feet (30 m) from the side of a ship, perpendicular to its direction of travel. These were a significant improvement over the old method, permitting the use of large 'patterns' of up to ten depth charges from the throwers and stern depth charge rails ...
Deep underwater explosions are those where the crater is small in comparison with the depth of the explosion, [2] or nonexistent. The overall effect of an underwater explosion depends on depth, the size and nature of the explosive charge, and the presence, composition and distance of reflecting surfaces such as the seabed, surface, thermoclines ...
Morally devastating experiences in Iraq and Afghanistan have been common. A study conducted early in the Iraq war, for instance, found that two-thirds of deployed Marines had killed an enemy combatant, more than half had handled human remains, and 28 percent felt responsible for the death of an Iraqi civilian.
First World War sailor with a fish stunned by the explosion of a depth charge Shells exploding in the water during naval battles also tend to kill fish with the same effect of blast fishing, [ 10 ] only without any systematic attempt to collect the harvest.