DIN EN 790:2001-10

The document applies to stairs with inclination angles of 45° to 60° used in working areas of inland navigation vessels. It does not apply to stairs accessible to passengers. For stairs in the outside area inclination angles up to 55°, for stairs in engine rooms and boiler rooms inclination angles up to 60° are permissible. Wherever possible, stairs conforming to EN 13056 should take preference.