CPC Subgroup
F41H 3/02 covers, e.g. screens, nets (making thereof, see the relevant classes, e.g. D04)
Full Title
Camouflage, i.e. means or methods for concealment or disguise (for vessels B63G8/34, B63G13/02 ) > covers, e.g. screens, nets (making thereof, see the relevant classes, e.g. D04)