Waterborne parcel transport

A method comprising a first marine unmanned vehicle (MUMV):

• receiving, at a source location of a transport waterway, a waterproof tote, the waterproof tote containing a parcel for transport to a delivery location, the waterproof tote configured to transport the parcel, via the transport waterway, with the waterproof tote immersed, at least partially, in water of the transport waterway, the source location comprising a land location for delivering the waterproof tote to the first MUMV, the delivery location comprising a land location for receiving the waterproof tote from the first MUMV;
• coupling the waterproof tote to a tether, the tether coupled to the first MUMV, the tether having a buoyancy to float on the water of the transport waterway, the tether and the waterproof tote configured to couple the waterproof tote to the tether with the tether floating on the water of the transport waterway and the waterproof tote immersed, at least partially, in the water of the transport waterway, the first MUMV and the tether configured to tow the waterproof tote from the source location to the delivery location with the waterproof tote coupled to the tether and immersed, at least partially, in the water of the transport waterway;
• and,
• transporting, from the source location to the delivery location, the waterproof tote on the transport waterway by towing the tether with the tether floating on the water of the transport waterway and the waterproof tote coupled to the tether and immersed in the water of the transport waterway.