Just copy and paste my folder ( WW2 Sub Periscope Depth ) into your FS9 Aircraft folder
Start FS9 and under (Create a flight) scroll to ( RON SubmarineZ) and select the variation of Sub
Hit the Shift/E key to bring the sub to Periscope Depth...

NOTE under display settings..set (aircraft cast shadows to OFF) for best result as the shadow effect in the evening
is wAy abnormal looking...gOOd luck
Ron at jeff6449@bellsouth.net