Pacific Maritime Group said its harbor towboat S. Bass has recently completed a full repower at Bay Ship in Alameda, Calif. and is back in action in San Diego, Long Beach and the Bay Area.The repower involved installing new EPA Tier 3 Mitsubishi S12R-Y3MPTAW engines, and Twin Disc 540 transmissions which were supplied by Dee Finley Diesel Repair, and installed new exhaust, water coolers