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Author Topic:   2002 Dauntless 180 Weight On Trailer
K Albus posted 07-18-2009 03:15 PM ET (US)   Profile for K Albus   Send Email to K Albus  
It’s a dark and dreary day today in Southeastern Michigan. Cold and cloudy, with intermittent rain showers. With little of chance of taking the boat out anywhere, I decided I would take my boat and trailer to the nearby CAT Scale to find out how much it weighs and to check for proper tongue weight on the trailer.

I have a 2002 Dauntless 180, with a 2002 Optimax 135, and a 2002 Shoreland’r trailer. Before revealing the actual results, I’ll provide my best-guess estimate based on the information I had available before hitting the scale.

Hull weight (from Boston Whaler website): 2,000 lbs.
Engine weight – 2002 Optimax 135 (from sticker on engine): 435 lbs.
Trailer weight – Shorland’r SLB35BLW (from trailer registration): 630 lbs.
Spare tire (estimate): 60 lbs.
60 gallons of gasoline (6.4 lbs./gallon): 384 lbs.
Approximately 3 gallons of oil (estimate): 20 lbs.
Anchor, dock lines, life vests, electronics, seat cushions, etc. (estimate): 200 lbs.
Total Estimated Weight: 3,729 lbs.

As it turned out, I wasn’t too far off. The actual weight provided by the scale was 3,840 lbs. The tongue weight was 340 lbs., or 8.85%, putting it within the safe range. This makes sense. I tow my boat with a 2005 Jeep Grand Cherokee, which according to the scale weighs approximately 5,000 lbs. The vehicle has always pulled the boat quite easily, with no fishtailing or other problems.

That was my boat-related fun for the day. And now I have something to do tomorrow. On the way to the scale it rained just enough to result in my boat getting covered in road grime. So I guess tomorrow I’ll wash the boat and give it its annual waxing.

jimh posted 07-19-2009 08:16 AM ET (US)     Profile for jimh  Send Email to jimh     
Kevin--Congratulations on the weight estimate being accurate to 2.9-percent. That is very good accuracy. I suspect the scale accuracy is probably only one-percent, particularly at the range of weight for your truck and boat.

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