Install TMOwTw 2.14?

[shegeek72]

First of all, let me say I've been on leave (from Silent Hunter) for quite some time so please excuse my de-evolution.

I've started back up by playing TMO 1.9, but am frustrated. Here's why:

I was chasing a convoy at night (date April, 1942), kept out of sight by keeping distance with decks awash. Seas calm with 1/4 moon. Getting well ahead I positioned my sub at periscope depth, engines off and waited for the merchants. However, the two destroyers sensed I was there and blew my cover. How did they detect me? Radar? They started pinging me after using their spot lights and flairs. Would this have happened in real life? Sorry if this is a rehash.

FWIU, in choppy seas I wouldn't be easily detectable. However, I'm not willing to wait around until a storm develops, especially in April!

I'm considering installing TMOwTw 2.14 since is has dumbed down enemy sensors by using JSGME: uninstalling TMO 1.9 and installing TMOwTw 2.14. Do I need to be in port before the install? Thanks!