Downloaded the new FDE and copied in the (even newer) [WEIGHT_AND_BALANCE] and [contact_points] sections.
Lights are now non-existent. Appears due to 2 [LIGHTS] entries, the first of which contains no data. Removed that, and lights are back to the positions set for the PT boat - which don't work for the Schnellboot.
These (below) appear proper, but suggestions/corrections are welcome. I re-positioned the navigation (red and green) lamps to set them into the light boxes atop the rails (I didn't recognize the light boxes for what they are at first - thanks for pointing that out):
[LIGHTS]
//Types: 1=beacon, 2=strobe, 3=navigation, 4=cockpit, 5=landing, 6=taxi, 7=recognition, 8=wing, 9=logo, 10=cabin
light.0=3, 12.48, -0.1, 21.10, fx_navwhih
light.1=3, 25.94, 8.0, 9.31, fx_navgre
light.2=3, 26.10, -8.4, 9.40, fx_navred
light.3=3, 10.44, 0.0, 19.30, fx_navwhih
light.4=3, 10.44, 0.0, 17.10, fx_navwhih
light.5=3, 10.44, 0.0, 15.04, fx_navwhih
light.6=3, -55.59, 0.1, 8.81, fx_navwhih