Quote:
Originally Posted by mookiemookie
I like to put one just in front of the bridge on C3 cargos. Like right where the bridge ends and the cranes are. Set it to 3.5m depth and use impact triggers. Makes a nice big boom more often than not.
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That's because that's where its fuel bunker is located, and you're running the right depth to hit it smack daub. Makes fer a purty fireball.
The fuel bunker is one of several 'critical hit' locations. Some examples are the fuel bunkers, engine room, ammo bunker, keel, steering and propulsion. Those locations will appear in the recognition manual as selectable boxes when certain criteria* are met:
You have to be within a certain minimum range (with the stock game it seems to be 500 meters, and with GW 1 km; not sure about NYGM), with an AoB around 80 - 100 degrees, and a bearing of 0 +/- 30 degrees (180 +/- 30 degrees for stern targeting).
In other words, near-perfect targeting position.
If you are locked onto the target, have the manual open to the correct ship type/class (easiest [i.e. 'cheating'

] way is to click 'ship' at the upper left of the notepad; that automatically will open the recognition manual to the correct nationality and ship type) and meet the above criteria, you will notice odd little boxes appear superimposed on the ship. Resting your cursor atop them will show you what it is (ex. engine room, fuel bunker); clicking it will shadow-light it, and aim your torpedo there automatically. You're virtually guarenteed a hit under those conditions (unless you forget to open the outer door first, which delays firing and throws off the computation).
I think it's roughly 50-50 with the fuel bunker whether the ship explodes or not. But it definitely greatly improves your chances for a 1-fish kill.
There is a mod out there (I think it's called the merchant vunerability mod) that, when installed, color-codes the ships and always shows the appropriate sweet spots. Just be forewarned: just because the mod shows them, it doesn't permit you automatically
targeting them. You still need to be in the right range and position for those boxes to appear. But what the mod
does do is help you determine where to try manually targetting your torpedoes for maximum effect.
*I'm not positive about the exact numbers, but from in-game experience (or lack thereof?

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