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cg49 Vincennes:

The Ingalls factory proposed a further weight reduction plan, first replacing the hull materials.

将原本以hts高张力钢板屈服强度约50ksi，相当于345mpa建造的01甲板改由强度更高屈服强度约80ksi，约549mpa的hy80高张力钢板向来给潜艇使用。

The thickness of the side and gunwale strake 80 below the deck and above the waterline, which were originally built with hy01, has also been reduced. Under this ship plate, the side ship plate originally made of hts steel has also been replaced with hy80 and reduced. The thickness of the HTS steel plate on the side of the first deck has also been reduced. The bow wave plate originally made by HTS has been changed to aluminum. As for the frame part, the original HTS steel is still maintained.

In addition to changing materials, Ingalls also made several design and layout changes:

First of all, the front and rear main masts are changed from the original four-corner type to a triangular type, which can reduce the weight of 8.9 tons.

The cooling system layout of the Aegis system was changed. The system cooling module of the command and decision-making system C&D was moved from the second cooling machine room on deck 01 to the original storage room on deck 01. The third cooling machine room of the Aegis system was moved to deck 03, forward spy1a. The radar cooling system room was moved down from the 03 deck to the first auxiliary engine room on the second deck. The rear spy1a radar cooling system was also moved from the original below the 03 deck to the original aviation equipment storage room on the second deck. The above measures can reduce the weight of the ship. The heart is lowered by 0.08 feet.

The deckhouse originally located on deck 04 and used to store Phalanx 20mm ammunition was cancelled. The ammunition was stored in a new cabin at the bottom of the delta mast on deck 03, which is in front of the new engine room of the third cooler of the Aegis system. Phalanx system support equipment It was moved to the front of the helicopter hangar where the third cooling room of the Aegis system was originally located.

The above measures to change the system layout and cabin can lower the center of gravity by 0.09 feet 68.575px.

Expand the use of the new marine cable AMC to replace the original milc915 cable.

cg49的amc总长度由cg48的5.5万英尺16764m增加到8.5万英尺25908m，占全部电缆的80。

Compared with milc915, amc is not only lighter in weight, but also produces less smoke when burned and does not produce toxicity.

The hangar ventilation ducts are changed to lighter materials and structures, which can save 4.1 tons of weight.

Install vls:

In view of the gradual development and maturity of the mk1975 vertical launch system vls, which was developed in 41, the U.S. Navy decided in early 1980 that all Ticonderoga-class contracts contracted and built after the 1982 budget year would use this revolutionary missile launch system.

At the same time, we also took this opportunity to carry out large-scale hull design changes to solve the problems of insufficient displacement margin and excessive center of gravity that had plagued previous ships of this class.

As mentioned above, the first two cg52 and 53 that underwent design changes were handed over to Ingalls Shipyard for construction.

cg52 bunker hill number:

Since the relevant design parameters of the mk41 at that time, especially the weight, and the distribution of bomb types involved were still undetermined, the US Navy's displacement center of gravity requirements for the CG52 were still relatively conservative.

在美国海军发给英格尔斯厂的cg52初步要求中，排水量为9200吨，重心高度23.07英尺，与1979年5月cg47通过第一次重心计算审查时的数据类似，这比1980年10月美国海军批准cg49设计时的要求宽松许多。

Chapter 126 Preview Performance Data