would use same items for explosive power as custom nuke
made in warhead assembly station or missile assembly station gets new page for warheads

Size 10:
9 slots
weight: 0.25t + (0.25t * slots used) (2.5t max)
health: 10.0

Size 15:
18 slots
weight: 3.0t + (0.25t * slots used) (7.5t max)
health: 20.0