Before revision: SNAP-7 Navigation buoy near Baltimore with a flashing light powered by a SNAP 7A SNAP-7A D and F was designed for marine applications such as lighthouses and buoys; at least six units were deployed in the mid-1960s, with names SNAP-7A through SNAP-7F.
After revision: ,SNAP-7 Navigation buoy near Baltimore with a flashing light powered by a SNAP 7A SNAP-7A D and F was designed for marine applications such as lighthouses and buoys; at least six units were deployed in the mid-1960s, with names SNAP-7A through SNAP-7F.