Mediterranean, Baltic, and Taiwan submarine threats compared

Which modern or Cold War theater best compares with the Mediterranean threat to submarines in the Second World War?

No single theater matches it: the Baltic parallels the concentrated ASW threat, while Taiwan and the South China Sea offer different combinations of restricted water, shelves, and deep-ocean maneuver space.

Cold War Baltic operations are compared with Mediterranean submarine warfare through high threat levels and a Western emphasis on sea denial. Modern airborne threats include sonobuoys and acoustic torpedoes, while the South China Sea combines shallow shelves with deep areas where nuclear submarines have more room to manoeuvre. Modern boats spend more time submerged and can use electronic-support masts to help judge when a snorkelling boat should dive. Clarke separately suggests that operations around Malta have Baltic parallels, while the Western Mediterranean's complicated mix of national forces resembles aspects of the Taiwan Strait and South China Sea. He qualifies that comparison by saying submarines are not his strongest field, although he has studied the U class more closely.