That doesn't always work. I blew the shafts off a pair of props under a heavy crusier and the props stayed in place and the ship kept making headway even though it was taking on water very quickly in the large holes I put in her hull.

hehe tempting isn't it. ;)

I just added NSM to my list of mods. I was still sinking way to much even with RFB. I use manual targeting and all but I am really good at guessing what to put in the TDC and I score a high Hit percentage.2 out of 3 torpedos I fire hit there target. I am like Mush Morton on my views about trying to use one torpedo per sinking. That figure includes duds.

It was a photo recon mission. We got good and close took the snap shots then fired two fore tubes. All we had left. We were turning to exit and setting up a solution for the stern tubes when the first torpedo hit.

Much to my supprise the flat top went up in a ball of flames at the first strike :hmm:

With NSM, you want to also be patient and not necessarily launch a second attack on a stubborn target. Some bigger ships, espeically warships, can just take a long time to flood and go down. The other night, I hit two Hiryu carriers in a task force headed for Java. I hit with four fish on the first, then with 3 on the second (I was working much faster with the stern tubes since out presence was pretty well known by then) - they both did go down, but took about 20 and 45 minutes respectively to sink (as I crept way at 1 knot).

With NSM, signs of a lethal hit(s) are drop in speed or stopping outright, clear list or bows down/stern down attitude setting in. Then save your fish and let the flooding take it's toll.