| Class SM-12 (SMJ-12, SMLJ-12, SM-21, SMJ-21, SMLJ-21) wagons entered service in 1990. They are flat wagons with solid decks and retractable twistlocks designed to transport 8 x 5ft, 4 x 10ft, 2 x 20ft or 1 x 40ft containers, and with horizontal brakewheels at both ends level with the deck. Some have buffers to prevent container doors from being opened.Number range 23 918 004 to 23 922 184, Length between couplers 13.938m, Length over headstocks 12.190m, Length between bogie pivot centres 9.294m, Deck height 1.082m, Width 2.438m, Tare (average) 17,050kg, Load 48,000kg, Deck area 27.5m3. |