Integrated houseboat-powerboat system

Integrated tug-barge vessel

Jet drive propulsion system for a pontoon boat

Marine shunter

Means of connecting a pusher boat and a barge

Method for transporting goods by freighter from an arctic port t

Movable skeg for non-propelled barges

Multi-use watercraft

Multi-use watercraft

Ocean going push-towing combination

Push tug-barge thrust transmittal means

Seagoing composite barge-tug vessel

Seagoing separable tug and barge construction

Self-contained marine propulsion system for a pontoon boat

Streamlined tug-and-barge linkage

System for interconnecting a barge and a pusher tug

Tooth and friction lightering arrangement

Tug and barge connector and receiver apparatus

Tug/barge apparatus

Watercraft