Each time an Adeptus Astartes unit from your army disembarks from a Transport (excluding Fly) that made a Normal or Advance move this phase (excluding those that arrived from Strategic Reserves), that disembarked unit can make a Normal move of up to D6", or a Normal move of up to D3+3" instead if that Transport is a Heavy Transport (see below).
Adeptus Astartes Transport units from your army (excluding FLY) that have a Wounds characteristic of 14+ have the Heavy Transport keyword.
Building an army? Create, validate and share your list with New Recruit, army builder for Warhammer 40,000 11th Edition and many more games.
Try the builder