ms Seven Seas Mariner is a passenger cruise ship with identification IMO number 9210139, MMSI number 311622000 and call-sign number C6VV8, registered in the Bahamas. The cruise ship is owned by NCL Norwegian (since 2014) and operated by Regent Seven Seas Cruises. The vessel debuted in 2001.
IRC 2003 Handrail height, measured vertically from the sloped plane adjoining the tread nosing, or finish surface of ramp slope, shall be not less than 34 inches (864mm) and not more than 38 inches (965 mm).
Current versions of these codes and standards now agree that handrail is defined as either a circular cross section with an outside diameter of 1Â¼ (32 mm) minimum and 2 (51 mm) maximum or a non-circular cross section with a perimeter dimension of 4 (100 mm) minimum and 6Â¼ (160 mm) maximum and a cross section dimension of 2Â¼ (57 mm) maximum.