The floats could be jettisoned in flight to increase performance or left off altogether for one-way missions.

The answer lies with a one-way mission.

There are also full-scale models of the planes, with a fuel tank big enough for only a one-way mission.

The Lady Colonel told me this is a one-way mission.

That project was a one-way manned mission to the Moon.

Privately he suspected the attack on the starship would be a one-way mission, no matter how it was done.

Merrin faces a bleak future when her twin Cally is sent on a one-way mission.

Laika was to be the "flight dog" - a sacrifice to science on a one-way mission to space.

Why send a crew on a one-way mission into the unknown?

Pilots were trained for one-way missions into Soviet territory to increase effective range at some cost in negating pilot recovery.