Keywords: mersey ferry outdoor The MV Royal Iris is a twin screw, diesel-electric, former Mersey Ferry. The vessel was built by William Denny & Brothers of Dumbarton (Yard No. 1448) and launched in December 1950, costing £256,000. (Now on The River Thames just past The Thames Barrier visitors center) The MV Royal Iris is a twin screw, diesel-electric, former Mersey Ferry. The vessel was built by William Denny & Brothers of Dumbarton (Yard No. 1448) and launched in December 1950, costing £256,000. (Now on The River Thames just past The Thames Barrier visitors center) |