"Happi Daze" Launched At Weaver Boat Works Weaver Boat Works has launched the GK80 sportfisher which was under construction. She is called "Happi Daze" which is a name that you might have heard from this builder before. There was a GK75 with similar name ("Happy Daze") before so it is possible this is for a repeat customer. The new yacht was built by the cold mould method and power is brought by MTU 2,600 horse power diesel engines. Top-end speed is going to be in the region of 45-knots with a fast cruise of 38-knots.