
My current boat is a single screw ( one propeller, one engine), and the trawler I'm building will also be of the single screw variety. While my current boat is much smaller than what I'm building I've never had much of a problem maneuvering her around yet I'm choosing to install a bow thruster on the trawler. A bow thruster is basically a propeller in the bow of the boat driven by either an electric motor or a hydraulic motor that aids the captain in maneuvering the boat.
Choices for powering a bow thruster are either electric or hydraulic. While the electric models are more affordable and a little easier to install, I've chosen to utilize hydraulics as my power source. I going the hydraulic route for a few reasons. Hydraulic power is much more reliable than electric ( component corrosion is a non issue). Hydraulic units have a continuous duty rating unlike electric thrusters that are only able to be used for a few seconds at a time( the electric motors over heat, and the electric motor consumes the battery's charge quickly due to the huge amperage draw). By the time I figure on a separate battery bank, separate charger, cable runs, buying new batteries from time to time, reliability and failure when one needs it most, I feel hydraulics will be cheaper in the long run. I own and operate some excavating equipment that is 20 years old. I've never had a hydraulic failure on any piece of equipment other than a hose breaking, and it is safe to say that this equipment takes a beating. I can also tell you that breakdowns due to electric components, while not an everyday event, do happen and tend to cause things to come to a grinding halt.
After searching high and low I decided upon using a hydraulic thruster engineered and built by Key Power Inc. Key power is a Canadian company and I must say that all my dealings with them have been great. I've yet to purchase my thruster, but they gave me good advice on sizing the unit and have been helpful with the hydraulic system as a whole. As much as I wanted to keep my purchases in the states, Jim at Key Power was the only vendor who actually acted like they wanted my business and wanted to sell me components. Good people.
The actual thruster is housed in a 1

The bow thruster tube cut one of my ballast boxes in h half so I'm going to have to be careful on maximizing space for my ballast. I measured t


Looking at the completed job all I can think of is how I just cut a big assed hole in the bottom of my boat. While the money I'm going to spend on the thruster is not small change, I'm looking forward to the added maneuverability my little steel trawler is going to have.
Conall
Dupont Hydro is a leading manufacturer and exporter of Hydraulic Grab and also one of the leading Hydraulic Grab supplier.
ReplyDeleteI installed a keypower 10" in a Roberts Waverunner 45 this past Easter. We love it and use it every weekend. Ours is mounted in the stern, and works perfectly spinning etc. Amazingly, if the stern goes one way, the bow goes the other!
ReplyDeleteRoy
Great idea! Thank you! I found another one on this website: http://www.nauticexpo.com/boat-manufacturer/bow-thruster-2706.html
ReplyDeleteWe manufacture acme quality products such as Electro-Hydraulic thruster, Electro-Hydraulic thrusterThrustor Brakes Supplier,Electro-Hydraulic Thruster Manufacturer Lever Limit switch etc.
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