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Goldilocks torpedo's for an American Destroyer Split


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She lay down on the big bed and said, “This bed is too hard!” (Active Homing))

She lay on the medium bed and said, “This bed is too soft!” (Unguided)

She lay down on the small bed and said, “This bed is just right.” She fell asleep. (Passive Homing)

==================================================My Proposal=============================================
There are many types or torepoes that evolved from the first spar lance to the rocket powered cavitating torpedoes of the cold war, but during WW2 there were broadlty three important types to my argument, dumb torpedos or fire and forget, active homing torpedoes like those on the submarines of world of warships, and passive homing torpedoes. 
My idea is a new destroyer line, preferably American, but could be any faction awaiting a second line, perhaps my own greek line proposal, or the split line british flotilla leaders.  The idea is simple something smarter thenthe standard dumb torps but dumber then the (Homing torpedoes) on submarines.  There would have to be some kind of trade off you cant have torps that fire as often, travel as far and hit as hard, are as numerous all while being harder to dodge.  
Mayby some kind of scan that is you have to get in a certain range for a period of time to add the enemy signiture maybe using acoustic sonar.  You can then launch after with torps that will kind of curve towards teh enemy.  Or something just spitballing, ok i have a bath of hot tark and freh plucked feather i know whats going to happen next.
Acoustic homing is a system which uses the acoustic signature (sound) of a target to guide a moving object, such as a torpedo. Acoustic homing can be either passive or active in nature. Using passive homing, the system is designed to move either toward or away from a sound, and may also be designed to move only toward certain types of sounds to the exclusion of others, while active homing makes use of active sonar. The system emits a sound pulse that reflects off objects and then back to the system, where the system processes the echos to determine the proper response.

An object can be equipped with two or more acoustic transducers, which function as speakers and microphones. If a transducer receives a sound louder than that received by the other transducer, the object turns in the transducer's direction. If the object is to manoeuvre in three-dimensional space, more than two transducers are needed. Typically, more than three transducers are used, and arrays of over 100 are not unknown. A large number of transducers allows for more accurate steering.

In 1943, it became known in the technical community that the Germans were using a torpedo called the German Naval Acoustic Torpedo (GNAT) with terminal homing, a torpedo that guided itself to contact with the target by the noise generated by the ship's propellers (cavitation). German development of the GNAT had been known in the U.S. Intelligence community, and in 1940, the NDRC sponsored a project to develop an acoustic homing torpedo. The project was headed by Western Electric; the homing system effort was centered at the Bell Telephone Laboratories and the Harvard Underwater Sound Laboratory. Engineering development of the torpedo, Mine Mk 24 (mine being a misnomer for security reasons), was assigned to Western Electric Co., Kearney, N.J. and the General Electric (G.E.) Engineering and Consulting Laboratories, Schenectady, N.Y. Following successful evaluation of the prototypes, production was started in 1942 Western Electric Co., Kearney, N.J. and at the G.E. Co., Erie Works, and later at the G.E. Co., Philadelphia, Pa. Approximately 10,000 units were ordered, but the order was reduced due to the high effectiveness of the weapon. (The Mine Mk 24 was also known by the code name "Fido".)

The Mine Mk 30, again a misnomer, was developed by the Brush Development Co., Cleveland, Ohio, concurrent with the Mine Mk 24 because of apprehension regarding the acoustic steering of the Mine Mk 24.

The Mine Mk 30 was unique in that it was only 10 inches in diameter and weighed only 265 pounds including a 50-pound warhead. It was nearly identical to Torpedo Mk 43 Mod 1 which was to follow a decade later except that the Mine Mk 30 employed passive acoustic bearing system rather than the active acoustic homing system of the Torpedo Mk 43 Mod 1.

Development was successfully completed in 1943, but was not produced since Mine Mk 24 had demonstrated satisfactory performance late in 1942.

After making its debut in July 1943 with the sinking of the U 160 in the Atlantic, about 340 Mines Mk 24 (figure 16) were launched by the Allied forces in World War II. Two hundred-four of these were against submarine targets with the following results:

1. Number of attacks on U-boats - 204,
2. Number of U-boats sunk - 37 (18 percent),

3. Number of U-boats damaged - 18 (9 percent).

The U.S. forces, with a better opportunity for adequate training in the use of the mine, achieved the following results from 142 attacks on U-boats:

1. Number of U-boats sunk - 31 (22 percent),
2. Number of U-boats damaged - 15 (10 percent).

Mine Mk 24
Figure 16. Mine Mk 24
A comparison of the effectiveness of Mine Mk 24 with aircraft-launched depth charges indicate that when depth charges were used, 9.5 percent of the U-boats attacked were sunk, but when Mine Mk 24 was used, 22 percent were sunk.

In approximately the same time frame, engineering development was started at Western Electric on an electric anti-escort torpedo. Torpedo Mk 27 Mod 0, or "Cutie," was the adaptation of Mine Mk 24 for submarine use, and saw service starting late 1944/early 1945 in the Pacific theater.

About 106 Torpedoes Mk 27 Mod 0 were fired during World War II, with 33 hits (31 percent) resulting in 24 ships sunk and 9 ships damaged. Based on an analysis of salvo firing of nonhoming torpedoes against escort-type ships, a single Torpedo Mk 27 achieved the same results against escorts as a salvo of the larger nonhoming torpedoes.

In the departure from the practice of the time for the purpose of obtaining a quiet launching, Torpedo Mk 27 was started while still in the torpedo tube and swam out under its own power, requiring 8 to 10 seconds to clear the tube. The noisy ejection of the conventional torpedo was thus eliminated.

With successful application of the passive homing featur
e to "mission kill" or crippling weapons characterized by small warheads, application to large antisurface ship weapons logically followed, thus, the development of Torpedo Mk 28 by Westinghouse Electric Corp., Sharon, Pa., in the later World War II years. The Mk 28 was a full-size (21-inch diameter by 21-foot length), electrically-propelled submarine torpedo, with a speed of 20 knots and a range of approximately 4000 yards. This torpedo was also gyro-controlled on a preset course for the first 1000 yards, at which point the acoustic homing system was activated. The explosive charge was also increased to approximately 600 pounds.

About 14 Torpedoes Mk 28 were fired during World War II resulting in four hits. Since this torpedo was made available late in the war without adequate training in its tactical use, the number of hits was not as large as expected. The tendency to regard the acoustic homing torpedo as a device that could correct for any kind of fire control error was a factor in its low success rate. Nevertheless, the Mk 28 demonstrated that it was possible to successfully include acoustic homing in a full-size, submarine-launched torpedo.


The acoustic weapons developed and deployed during World War II were passive; they listened for a sound and then indiscriminately attacked the source. This technique, while far more effective than any preceding it, had limitations against a ship at slow speed, a submarine running deep, a submarine sitting on the bottom, or a ship employing countermeasures such as a stream of bubbles or a noisemaker.

Investigation of the use of echo-ranging equipment or an "active" homing torpedo system was initiated under the auspices of NDRC in 1941 at the G.E. Co. Research Laboratory, Schenectady, N.Y. Active homing differs from passive homing in that, with active homing, the torpedo steers on the basis of the signal returned by the target through reflection of the torpedo's own transmitted signal. In mid-1942, G.E. began development of the first active homing torpedo, Torpedo Mk 32, which was physically similar to Mine Mk 24 (figure 17).

Torpedo Mk 32
Figure 17. Torpedo Mk 32
By mid-1944, the program had progressed through the successful prototype stage, and due to the saturation of G.E. production facilities with other contracts, Leeds and Northrup of Philadelphia, Pa., was selected as supplier. About ten units were completed when World War II ended, and the project was deactivated until 1951 when Torpedo Mk 32 Mod 2 was produced in quantity by the Philco Corp. of Philadelphia, Pa. Originally intended as an aircraft-launched torpedo, the Mk 32 Mod 2 finally saw service use as a destroyer-launched ASW torpedo until replaced by Torpedo Mk 43.
=========================================For the hulls fopr my mad experimiment=======================
=========================================Other attempts 


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