MInor Fixes and Improvements

Powerboat VR

Take the helm of a variety of different ocean vessels from small sport boats all the way up to large commercial vessels. Dynamic seas, Day/Night cycle, RADAR, GPS, "IALA A" Buoyage with NavAid/AtoN lighting systems provide a realistic sailing environment. VR & Non-VR modes supported.

1. You can now walk on terrain when in VR mode 2. You can now walk under the water in VR mode so you can go swimming with the sharks! (this is not a fully supported feature and you're basically walking on the terrain under the water level but it looks kinda cool!). 3. Minor optimisation to terrain reflections on the water. 4. Minor adjustment to clouds