After the succes of the M40 X (year 3080) many other ship were built with the revolutionary M40 engine. But after 19 years of succes something new must be made. In year 3100 Long Spacecraft developed the M50 engine and with it the M50 Planet Class Explorer.
M50 engine developed by Long Spacecraft.
Used year 3100 and forward as a luxury passenger ship and cargo ship.