Toggle navigation. Pdf whatsapp. Get to know Dentist Dr. Daniel Javaheri, who serves patients in California. Daniel Javaheri Dentist x View as PDF. Your Health Contact clientservice yourhealthcontact. As the threat imposed by aircraft became more apparent, one of the mounts was later removed and replaced with anti-aircraft protection. Another reason for the demise of the surface to surface torpedo was the invention of radar which essentially destroyed any stealth advantages that the destroyer possessed.
I only remember a couple of live firing exercises. The surface to surface torpedo essentially disappeared from the post war fleet, although destroyer types were later fitted with anti-submarine homing torpedoes.
After the war all 20 MM gun mounts were removed and the forward 40 MM mounts were replaced by a pair of ahead thrown anti-submarine projectile Hedgehog mounts. Fletchers were the first destroyers to be fitted with radar. The ships carried surface search, air search, and fire control radars. The surface search radar had a range out to the horizon about miles while the air search when it worked could see out to about miles. The ships were propelled by a twin screw steam propulsion plant rated at 60, HP that could produce a maximum speed somewhere between 35 and 37 knots.
Considering that this was with s technology, this was a very respectable level of power and it would still be considered as such today. Two boilers were installed in each fire room. Each of the two stacks served a pair of boilers.
These boilers were used on nearly all World War II era carriers, battleships, cruisers, and destroyers.
A disadvantage of this type of boilers was that they imposed some definite limitations on the ability to conduct low speed maneuvering on short notice. There were two cross compounded geared steam turbine main engines. Each engine consisted of a high pressure HP and low pressure LP turbine set driving its associated propeller shaft through a double reduction gear. The HP and LP turbines were connected in series with respect to steam flow and in parallel mechanically into the reduction gear.
A smaller cruising turbine was mounted on the front end of the HP turbine. Astern elements were provided in the LP turbine. To go astern you had to shut off steam to the ahead turbines before you could admit steam to the astern turbine. Control was manual; by hand wheels mounted on a large gage board adjacent to the engine in response to engine order telegraph signals from the bridge. The electrical plant consisted of two kW VAC steam turbine driven ship service generators SSTG , one in each engine room plus a kW emergency diesel generator located in the forward part of the ship.
By comparison, a modern destroyer has three to kW generators. Machinery spaces were in an echelon arrangement, with alternating fire rooms and engine rooms.
This provided for redundancy in the event of battle damage and it remains the practice today on twin screw naval vessels. From forward to aft, the spaces were:. Essentially this provided two completely independent engineering plants. Two boilers were capable of providing speeds up to 28 knots which was adequate for most operations.
Access to each of these spaces was by hatches and vertical ladders to the Main Deck above. There were two means of egress from each space, one port and one starboard. There was no access between spaces below the Main Deck. An environmentalist would look askance at ships of this era. View our location.
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