As part of the design work of the Defiant and Type-10 Shuttles, the Type-18 represents some of the newer engineering practices in Starfleet. There are several key design changes from the Type 15 in the Type 18: impulse engines are mounted as pods which better armour them and protect them from damage, the Type 18 can has larger life support systems, and the Type 18 is much more heavily armed than the Type 15. The Type 18’s phasers are mounted as a turret on the top of the shuttlepod and it was designed to be swappable and removable from the hull. This is not a combat-ready shuttle, however, because of its very light shielding. The phasers were added to the design to allow the shuttlepod to fulfil some of the more vigorous assignments that fell into the role of the shuttlepod, such as debris clearance, escaping from battle, and short-range inspections and scouting.
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