A very noob question on destroyer evasion

[liljack]

Really should change the thread title to "Total noob totally suks"

Here's an example of how the interface confuses me. The manual says for the hydrophone station:

• Direction handler: Left-click on the handler to change the listening direction.
• Hydrophone volume: Set the volume of sound received with the hydrophone.
• Send ping (only available for sonar): Left-click to send a ping in the current sonar

Now, the only thing I can seem to do is rotate the direction handler. How do you set the volume? It seems I did at one point but I was just clicking, sliding, pressing buttons etc to see if I could work it out and don't know what did it.

Also, when I switch to observation scope the view is totally black. Pressing the up/down buttons makes a noise but the view stays black and the "height pointer" doesn't move. Honestly, I'm spending 99% of the time trying to click things rather than attacking convoys. Very frustrating without a decent manual.