((a)) A towing vessel that is at least 26 feet in length measured from end to end over the deck (excluding sheer), shall be operated by an individual licensed by the Secretary to operate that type of vessel in the particular geographic area, under prescribed regulations.
((b)) A vessel that tows a disabled vessel for consideration shall be operated by an individual licensed by the Secretary to operate that type of vessel in the particular geographic area, under prescribed regulations.
((c)) The Secretary may prescribe by regulation requirements for maximum hours of service (including recording and recordkeeping of that service) of individuals engaged on a towing vessel that is at least 26 feet in length measured from end to end over the deck (excluding the sheer).