As I understand it, the way it *should* work is the hydrophone should be non functional while surfaced, however you can still use it in the game.
The sonar itself, however, relies on the two "balls" under the sub, so you should be able to ping a vessel on the surface, however, I"m not quite sure how realistic that is, or how world variables (sea state, shallowness/dirtiness of the water) would play into it. As I understand it, a rough sea or very shallow waters would make it nigh unusable.
In SH4, though, both still work in the game while on the surface.
__________________
One fish, two fish, three fish, BOOM!

Fishie, Commander SS-215
Fear the Growler!
|