With the end of the Soviet Union, it looked like there was no longer a significant threat from submarines. The Coast Guard, whose ASW assets were already largely obsolete, took the opportunity to simplify its training and maintenance requirements by eliminating what remained of the Coast Guard’s ASW capability. It made sense at the time, but times have changed.
The Emerging Threat
For the first time, with narcotics traffickers starting to use true submarines, it looks like an ASW capability is essential to do a peacetime mission. (The primary surface ship ASW sensor, the towed array, can also help us find semi-submersibles and possibly other targets as well.)
In addition, the threat of military submarines has reemerged. There are still relatively few nuclear submarines in the hands of possible adversaries (other than possibly Russia) but their numbers are growing, and new air independent submarine technologies are making diesel electric submarines deadlier then ever.
Why the Navy will need Help