The rules that use the vocabulary item "landing craft" are:

<ship_class-creatable-sing>

landing craft air cushioned

landing craft utility

<type_of_ship-sing>

landing craft

<ship_class-not_creatable-sing>

landing craft air cushioned

landing craft utility

<type_of_ship>

landing craft

<ship_class-not_creatable>

landing craft air cushioned

landing craft utilities

landing craft utility

<ship_class-not_creatable-pl>

landing craft utilities