Tugboat ASD90

100' X 40' Z-DRIVE TRACTOR TUGS Foss Maritime of Seattle, WA has contracted with NBBB for the construction of four new 90 ton bollard pull Tractor Tugs with an option for six additional tugs to follow. Foss has selected a design by Jensen Maritime Consultants. The 100’ x 40’ Z-Drive tractor tugs will be built to United States Coast Guard Subchapter “M” regulatory standards, with ABS loadline certification, and UWILD notation. The vessels will be equipped with two MTU series 4000 main engines and meeting Tier 4 emission standards, Rolls-Royce US255 azimuth thrusters and Markey winches. Foss plans for the vessels to operate on the West Coast of the United States, performing ship-handling duties within ports and harbors. The vessels will be equipped with condition-based monitoring for the Z-drives and main engines. The first of the four vessels was delivered to Foss Maritime and is now in operation in California. See M/V Jamie Ann in Nichols Brothers vessel portfolio for more information. The remaining three vessels are under construction and will be delievered through 2020-2021.