After a number of CTD's I removed the mod then reinstalled manually, now all seems to go ok & no CTD's, could be some quirk with SH4 Scene.dat but not sure, I probably stuffed it somewhere, I decided to go to
AE47 Date: April 1940, via SH3 Commander, on the way back I just decided to "Return to base"!

These are the weather details, the jammed "Light Fog" is gone btw.

All readings at 10.30am game start at 11.00pm.
Cloud - Rain - Fog - Wind
Clear - None - None - 6mps
Clear - None - None - 6mps
Partial - None - None - 2mps
Clear - None - None - 8mps
Clear - None - None - 8mps
Clear - None - Light - 5mps
Partial - None - Light - 5mps
Partial - None - None - 7mps
Clear - None - None - 7mps
Clear - None - None - 7mps
Clear - None - Light - 7mps
Clear - None - Light - 7mps
Clear - None - Light - 7mps
Clear - None - Light - 7mps
Clear - None - Light - 13mps
Clear - None - Light - 13mps
Very good overall, had plenty of rough seas without the heavy fog and rain!
Thanks Stiebler & SubType Zero, came down a little heavy, especially since it was a problem my end,
sorry about that chief!