Via the app maps.me you can easily type in Tugboat and the navigation will lead you to this. If you do not have this at your disposal, you can use the following route:
From Willemstad you drive east to Salina. From Salina you drive onto the Caracasbaaiweg. Drive all the way to Caracasbaaiweg until you reach a roundabout at the end of the road. Here you take the second exit and continue straight on the road.
You will then see an exit on the left with a sign "Windsurfing & Paddleboarding". Take this road. Continue straight until you can take a right turn, then take this road. At the end of this road there take the left road. Follow this road until you reach a T-junction and here you turn right. You only have to drive straight for 30 meters and you will see a large ship in the water. You can park your car here and you will see the Tugboat Beach Bar on your left!