Robert Allan Ltd. has announced the delivery of two very compact high bollard pull ship handling tugs, Rascal and Rowdy, to Brusco Tug & Barge in the US.The RAscal 2000-D series tugs were constructed at Diversified Marine Inc. of Portland, Oregon, and at over 40 short tons are the highest bollard pull tugs of this size designed to date by Robert Allan Ltd.