Am I the only one who thinks this?

[WilhelmSchulz.]

Here I am in late 43 with the USS Balao off bungo Strait. radar reports a pair of contacts. I track them and get into position on what turned out to be a escort CV. I fire a full salvo and head deep. Heres the thing after the order to dive I reached 150 ft in almost no time(must of been under 5 min). Seemed a bit too quick. Once submerged where fleet boats realy that nimble?

BTW I use the latest RFB.