AHTS(ANCHOR HANDLING TUG SUPPLY,tug boat,supply vessel) 4400HP AHTS supply vessel Class :ABS AHTS(ANCHOR HANDLING TUG SUPPLY,tug boat,supply vessel)4400HP AHTS supply vesselClass :ABS42.00x11.00x4.9mspeed:13.5knots AHTS(ANCHOR HANDLING TUG SUPPLY,tug boat,supply vessel)