Does naval 4.5 ammo have proximity detonator ?
Yes it does. Mainly used in the Falkland/Malvinas campaign because of the wet, boggy nature of the land. We called it VT Fuse high, the others two options were VT Fuse Low for delayed action and DA (explode on impact). Your own side had the same problem with your 120mm mortars which tended to make big holes and throw soil around.