My Grandpa is a Tugboat Captain Author:Ken Kreisler Ken Kreisler has developed a story to inspire children while learning about the hardest working boat and crew on the water. The TUGBOATS. This book is written from the point of view of a small boy spending time with his Grandfather aboard a working tugboat. He learns how hard the boat and crew must work to keep everything running smoothly... more ». Ken inspires children as he tells the story of My Grandpa is a Tugboat Captain. Illustrated.« less