Newly installed mods not seem to be working.

[VonHelsching]

Originally Posted by robj250

While submerged, I pressed F12 and all I got was a view of the surface yet I was 50 metres deep.

Read the manual about the way to navigate in external view using the arrow keys, shift and ctrl buttons.

A quick way to submerge your external cam is to press ctrl (and keep it), left mouse click (and keep it pressed) and drag the mouse towards your direction.