As work proceeds on the first of the Royal Navy's two Queen Elizabeth-class aircraft carriers, authorities at what will be their home port, HMNB Portsmouth, England, have approved a design for the Portsmouth Approach Channel, the body of water through which the 65,000-tonne (71,630-ton) ships will transit. The carriers will be the largest vessels ever docked at Portsmouth. As a result, based on a design developed by BMT Isis Ltd., the Royal Navy will dredge a new approach that is 30 ft. ...


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