《戰艦世界》與坦克世界一樣分幾個系別，我們最新整理了網友們從外網翻來的戰艦世界美系科技樹，一起看看有哪些強力的戰艦吧！

戰艦世界美系科技樹

The Tree Itself : U.S. Cruisers Starting From Tier II
美系巡洋艦線從2級開始

Tier II – Chester

2級——切斯特級

“Chester” is a scout cruiser, built in the USA at the beginning of the 20th century. The main objective of this type of ships was scouting, which influenced its design – lightly armoured, but relatively high speed.

切斯特級是美國在20世紀初期建造的一種偵查巡洋艦，主要用于執行偵察任務————所以這條船沒什么裝甲，但是速度很快（當然，隨著航空器的發展，就是靠水上飛機和偵察機去偵查了）

Tier III – St.Louis

3級，圣**斯級

“St. Louis” considerably surpasses “Chester” in terms of firepower, carrying on board 14 six inch guns. Large displacement and good armour allow it to survive longer under enemy fire, but it has low speed.

圣**斯級搭載了14門6英寸（約為152MM）炮，較之于切斯特級而言，火力得到了很大的強化。同時，大噸位和良好的防護使其在炮火的存活率得到了保證————當然，速度也是感人至深的。

Tier IV – Phoenix

4級，奧馬哈原型（PS，Phoenix為毛子架空設定的名字）

“Phoenix” is the first “paper ship” of the U.S. cruisers branch, based on scout project in 1917. Lack of durability and tenacity is compensated by the cruising speed of 35 knots, excellent for its time, which allows you to keep up, even with the destroyers, and rapidly change location. Although the project was never implemented, it became the basis for the next ship – cruiser “Omaha.”

這是美帝巡洋艦線第一條圖紙船，1917年的偵查巡洋艦計劃。很脆弱，但是在35節下的穩定性是當時最好的，這可以讓你輕松追上很多驅逐艦，以及迅速專場。雖然這條船并沒有生產出來。但是，我們能在5級的奧馬哈級上面看見這個圖紙船的影子。

Tier V – Omaha

5級，奧馬哈級

Compared with its predecessor, “Omaha” has a larger displacement, which makes her a little more robust and strong in-game. The ship will be a pioneer in several aspects: for the first time a player will see gun turrets and the catapult used to launch scout-planes on deck. Like its predecessor, “Omaha” carried torpedoes, which would be a serious problem to contend with in close combat.

和4級船相比，奧馬哈級的排水量更大，這使其有更強的作戰能力。這是你第一次看見炮塔（之前的幾條船是沒有炮塔的）和水機甲板。和低級別的幾條船一樣，奧馬哈級能攜帶魚雷，這使其在近距離作戰中十分危險。

Tier VI – Cleveland

6級，克利夫蘭級

“Cleveland” is the most prolific type of cruisers in naval history. All guns are concentrated in four towers which allow concentrated fire on one side of the target ship. An important feature of this cruiser is its air defense guns, powerful for its tier, which turn “Cleveland” into a destroyer of enemy aircraft.

克利夫蘭級是一種被廣泛生產的巡洋艦。4個炮塔收納了所有的炮————這使其能集中所有火力攻擊一側敵人。值得一提的是，克利夫蘭級的防空炮十分給力————這使其能承擔隊伍的防空任務。

Tier VII – Pensacola

7級，彭薩科拉級

This is the first heavy U.S. cruiser with all the attendant advantages and disadvantages. It was built during the Washington Agreement, and in order to fit into the set displacement, designers had to neglect armouring in favour of armament and speed. In the game, as in reality, it has a rather high displacement for its speed – 32 knots and increased caliber guns when compared to the “Cleveland.”

這是美國第一條重巡（之前的幾條船全是輕巡），優點與缺點并存。彭薩科拉級是在海軍假日期間建造的。為了使該級艦不超重，設計師不得不削弱裝甲，同時強化速度與武備。在游戲中也是如此，在同排水量的重巡中，彭薩科拉的速度是相當快的，32節。和克利夫蘭相比，彭薩科拉的火力又強化了。

Tier VIII- New Orleans

8級，新奧爾良級

Despite all the limitations of the Washington Agreement, project cruiser “New Orleans” managed to combine a powerful artillery armament and good body protection. Unfortunately, the same cannot be said about the air defense – because of the overflow, ship designers were not able to place sufficient anti-aircraft guns. As a result, the power of its air defense has not changed much compared to the “Pensacola”.

盡管**海軍條約做出了種種限制，但是新奧爾良級還是嘗試著把大威力武備和良好防護結合在一起。不幸的是，防空能力似乎并不包括在內。為了防止傾覆，設計師沒有安裝太多防空炮，因此，較之于彭薩科拉而言，新奧爾良級的防空火力沒有太大提高

Tier IX– Baltimore

9級，巴爾的摩級

The conditions of the Washington Agreement were no longer in force with the beginning of the Second World War. Cruisers were no longer limited in displacement, which allowed an increase to their armour and air defense in the project “Baltimore.” It was a logical development of the cruiser “New Orleans” based on the principle “bigger, faster, and stronger.”

臨近二戰的時候，**海軍條約已經失去效力了。巡洋艦沒有噸位限制，這使得巴爾的摩級有更好的防護和防空能力。從新奧爾良級到巴爾的摩級就體現了“更大，更快，更強”的原則

Tier X – Des Moines

10級，得梅因級

One of the most significant problems of cruiser “Baltimore”, and of all the heavy cruisers in general, was a relatively low rate of fire. American naval designers began creating new naval guns, which soon turned into the draft heavy cruiser, “Des Moines”. The rate of fire of eight-inch guns almost doubly excels all the guns of its predecessors and its strong air defense makes it a deadly threat to enemy air groups.

巴爾的摩級還有其他重巡最大的問題在于射速感天動地。于是，美軍設計師開始設計一種新艦炮，而后迅速變成了得梅因級。新式203MM艦炮的射速幾乎是原來那些船上老艦炮的2倍，不僅如此，得梅因級再次強化了防空火力。這使其成為艦載機殺手。