Higher periscope ? Cant see ships

[nigelnire]

I’m playing operation Monsun and loving it but I cant really see the ships I’m trying to attack because the periscope isn’t up far enough I mostly see waves and just very short glimpses of the target even in shallow water. Any ideas how I can fix it?
I’m no expert and the other problem I have is the little direction indicator on the surface that shows where your Sub is and what direction its pointing in has gone. I’ve tried search but don’t really know what to look for.
If I can get these two issues sorted ill have a great time with this game. Thanks