[central_va]

Jap sonar sucked.

In the Atlantic if the Germans had stoppled building the type VII and IX, and went straight to the type XXI, which they could have done, we would have lost that battle.

[MasterGunner01]

Like so many things the Germans did, when it came to submarines, the Type XXI came into service in too few numbers and too late in the war to affect the outcome of the Battle of the Atlantic.

[MasterGunner01]

Unlike the Allied response to the Battle of the Atlantic where all sorts of technology was arrayed against the U-boats: long range patrol bombers (seaplane and land based); blimps for convoy escort; hunter-killer groups of “Jeep” carriers and destroyer escorts; convoys; HF direction finding; state of the art radar and sonar; improved ASW weapons like homing torpedoes, Hedge Hogs, and redesigned depth charges - Japan never got its ASW act together at any time during the Pacific War. Japanese radar and sonar sucked; the IJN had no equivalents to the CVE/De hunter-killer groups; Japan did not have the types and numbers of long range ASW aircraft. Their ASW efforts can best be described as amateurish.