Ultra-Pressure Machinery (CTP1)

Ultra-Pressure Machinery is an advance in Civilization: Call to Power.
==Summary==
Last of the Sea Advances, Ultra-pressure Machinery provides for added production through advanced undersea mines and improves military might with the powerful Plasma Destroyer and the stealthy, troop-carrying Crawler.
== Great Library entry ==
The first sea colonies appeared in the shallow waters of the continental shelf and of the Pacific island chains. The experience gained in these cities resulted in a much superior second generation of undersea equipment. With these new tools, only the deepest trenches remained outside of human limits.