Autonomous ships with no crew could sail the seas by 2050.  Advanced AI and sensors will enable fully automated cargo and passenger vessels. 

Self-driving ships will have high-resolution cameras, radars and lidars for 360-degree situational awareness. AI captains will plan optimal routes and collision avoidance maneuvers.

Broadband satellite links will allow remote monitoring from shore control centers Any emerging issues flagged to ground staff for troubleshooting.

Clean energy like batteries, hydrogen fuel cells and nuclear reactors will power crewless ships instead of heavy marine fuels dominating today.

Streamlined designs without crew quarters or control rooms will maximize cargo and equipment space. Wider hulls will enhance stability.

Robotic arms will automate container lashing, inspection and maintenance. Drones could undertake external hull inspections. 

Autonomous bulk carriers and container vessels will lower operating costs for shipping companies given minimal crew requirements.

Passenger ferries, cruisers and yachts may also become crewless by mid-century.  Robotic ports could service autonomous ships.

Transition to unmanned vessels will transform marine transport and oceanside communities relying on maritime jobs.

By 2050, both human-crewed and AI-driven uncrewed ships will coexist, combining strengths of human expertise and machine intelligence