[RAF_Magpie]

The History
In the late 1930s, the US Navy issued BuAer SD112-14 soliciting a twin-engined fighter form the major aircraft manufactures. Lockheed, who was already deep into developing the XP-38 decided to enter the competition with a radial-engined folding wing version of the Lighting. Dubbed the XFV-1 Trident, it actually had a higher performance rating than it's USAAF counterpart due to it's lower weight. It was soon discovered that this aircraft could also carry a Mk. 13 torpedo under its port wing. The idea was that after launching the torpedo, the aircraft could easily fight its way back to its carrier or defend other aircraft in the area.

It was never built however, only plans are known to be made. All performance figures are estimates, but from memory was supposed to be powered by R2800's, and was actually supposed to be HEAVIER, than a standard P-38.

Ironically, I've already made something like it; back when I was fiddling with the Franken-technique for the Whirlwind.

More of interest to be built would be the Navalised P-51, which actually WAS converted and trailed.