"Water is very dangerous foe. Best to aim guns at it and show it who is boss."
Coast Guards are a tier 7 resource in the Placebos industry. One Coast Guard costs 10 AA Hospitals, 1 EEE Placebos, and 5 Comrades. Doctor Hasselberg automates this industry, and is unlocked at Rank 72.
Coast Guards take about 3x longer to build up than Airports. For this reason, players should consider working on getting Alf Stark level 3 and/or Hannibal Tavius level 6 in the late 60s in preparation.