The Three Star River Tow Boat Mark IV EMYC（三个星河湾拖轮马克IV EMYC）.pdf

The Three Star River Tow Boat Mark IV 1- Introduction: A short history: A number of years ago Jim Smith, a long time member of the club, obtained a set of plans for The Battling Polo Tug. He built his first one of these boats from those plans, and was able to determine that the boat required a few changes. His suggestions included increasing the width of the hull for added stability, and to increase the draft of the hull. Back in 2001 I was able to obtain a copy of these plans, along with the article that Mr. Smith had written to explain the changes that he suggested. The original plans were not very good, and trying to incorporate Mr. Smiths suggestions on the fly was a little more work than I really wanted to do. So I sat down at my trusty computer, and dusted off an old copy of AutoCAD, and generated a new set of plans that incorporated Mr. Smiths suggested changes. In the beginning we all just referred to these boats as “Polo Tugs” until it was pointed out that the name “Polo Tug” might be a registered Trade Mark. So the Edina Model Yacht Club elected to rename these boats to “The 3 Star River Tow Boat”, or as I often call them The 3S RTB’s. At the present time (to the best of my knowledge) the club has not established any specifications, or standards for motors, propellers, batteries, drive shafts, stuffing boxes or any other hardware. All these things are left up to the builder, and to available materials. The materials called out are only suggestions, and can be replaced with whatever materials the builder may have available to them. Note of Caution: Many of the dimensions on the drawings are dependent on using the suggested materials. If the builder chooses to use materials other than what is suggested on the drawings, care should be taken to adjust the dimensions appropriately. For example if 1/8 t