Semi-Trailer Transporters Transporter Semi-trailers As many as 4 axles Built to customers specifications Tail ramps Axles Deck_ramps Load_anchorages Laden_front Laden_rear Hydraulic ‘beaver-tail’ rear ramps with swing-down hinge supports. Four 17.5″ axles with air suspension. Removable ramps between upper and lower decks - twistlocks set into decks. Chain anchorages set into coaming rails. Designed and built specifically for….. …. whatever needs transporting. Click the picture to view larger.