Eastern Shipbuilding Group, Inc. has announced the launching of the first of two (2) 80’ 5,100 HP Z-Drive Tugs. The C.D. WHITE for Bisso Offshore, LLC, a division of E.N. Bisso & Son, Inc., launched on August 22, 2019. A RAL RApport 2400 Z-Drive Ship-handling Tug design was provided by Robert Allan Ltd located in Vancouver, Canada. The C.D.