Signet Sirius, the first of two ART 92-32W Rotortugs was recently delivered by Signet Maritime at their Pascagoula Shipbuilding and Repair facility. This is the first ART Rotortug that Signet has built and operated in their fleet. Designed by Robert Allan Ltd. in collaboration with RotorTug BV, the Advanced Rotortugs (ART) incorporate the patented triple Z-drive Rotortug propulsion layout