Real Weight on a 2000 340 Sundancer.

[SeeYa Ray]

Hi Everyone - I was curious to know what my 2000 340 weighed with 7.4mpi's and V drive configuration, 4 batteries and 3 cylinder 5.0KW Westerbeke gen set. I took the boat to a certified scale and weighed it - it came in at 17980 lbs on the trailer. I had weighed the trailer previously at 2320 lbs. No canvas, sheets, curtains, dishes
So the weight was 15560 lbs which I was a little surprised it was that heavy so I started factoring what could make up the added weight to the posted dry weight of 13000.
I wonder if the gen set and batteries are not considered for the boat in the posted dry weight?

Dry weight 13000 lbs
2 Full tanks of fuel 220 x 6lbs = 1320 lbs
Water tank 40gals x 8.34lbs = 333.6 lbs
Waste tank ~2 gals x 8.34lbs = 16.7 lbs (almost empty)
Engine oil 2 gallons x 7.74 x 2 = 15.5 lbs
Batteries 4 x 70lbs = 280 lbs
Water in Engines, manifolds, hoses strainer ~ 6 gal x2 x 6lbs = 72 lbs
Westerbeke 5KW Gen 343 lbs
Water in Gen, lines and strainer 1 gal x 8.34lbs 8.3 lbs

Total 15389.1 lbs ~170.9 lbs difference

Im wondering does this look reasonable to assume what I listed to the additions to dry weight?

 

[Stee6043]

If you don't have a gallon or two of booze on board as well, you're doing it wrong

Your list looks reasonable to me. It's not hard to imagine you might have another 100+lbs in linens, dishes, fire extinguishers, etc and so on. And if by chance you have some moisture up in your foredeck (very common on our vintage Sea Rays) that'll also add some weight...

 

[Strecker25]

I’ve always understood dry weight to be measured with the standard package. In your 340 that likely means the Gen (was it standard equipment that year?) but not your 7.4’s as I think the base engines were 6.2’s?

I’d love to get ours weighed somehow. It’s dry rated at 22k but I suspect weighs much more than that

 

[Lazy Daze]

The dry weight is the base boat only - base engines, no fluids no options. Add in any options you have over and above standard.

You calculated the water in the engines at the wrong poundage. But that's miniscule.

You're making an assumption that ALL 2000 340DA's come off the line weighing exactly the same - they won't.

Do you have ANY other gear onboard?

Even taking all that into account, the amount you're off is well within a margin of error considering the total pounds. You're good.

 

[dtfeld]

When I purchased the 2001 410, the travel Lift had a scale. Read 28,802, or about 30% more than the advertised 22k!.

 

[Strecker25]

When I purchased the 2001 410, the travel Lift had a scale. Read 28,802, or about 30% more than the advertised 22k!.

dang, i figured 25-26k but that's impressive. No wonder it feels so solid

 

[Stee6043]

When I purchased the 2001 410, the travel Lift had a scale. Read 28,802, or about 30% more than the advertised 22k!.

This is why I can't stay to watch my marina lift/launch my boat. I'm pretty sure their lift is rated to 25,000lbs...it made lots of wonderful noises the one time I watched

 

[radscoot]

Did you account for the Anchor, chain, rode etc.?
I would guess they are options and would not be included in dry weight calculations.

 

[Skybolt]

On most of the Sea Ray's that have engine options, meaning different models, the engine weight is also left out of the calculation.

For instance my boat is listed a 27Klbs. If I add in the actual weight of the engines, generator and accessories etc. My boat weighs in at 36K lbs. and guess what the travel lift always reads.