Age of steam and steelAbout Prof. t. 18-19 of this era, the marine warship progressively over the era anyway. Most of the boats began to be simplified. By the majority of steel components. Steam power and start off the pole. With the use of submarines in the army is more primarily in this era. Here the ship is still Germany, the us and England.The majority of boats styles from steel to wood. Steam power is a major. There is a new version of the cannon. There is a boat with a machine gun in the control tower, with a lot more communication.
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