CONTINUOUSWAVE

[Inferred question:]

Q1: what is the total dry weight of a [unknown model year--PLEASE ALWAYS MENTION MODEL YEAR] REVENGE 21 with a Yamaha 150-HP Vmax two-stroke-power-cycle engine on a [unspecified] tandem-axle steel trailer [apparently made by E-Z-LOADER based on Figure 1] ?

[NOTE: if you want to elicit answers you need to ask an actual question--Moderator]



[Moderator's note: adjusted this image to remove about 80-percent of the image which was just trees, sky, and pavement and yet the boat is still cropped off because the photographer held the camera in portrait orientation instead of landscape orientation. If you are trying to take a picture of something that is much wider and longer than it is tall, don't hold the camera in a vertical format orientation.]

Estimated weights in LBS
Hull = 1800
Trailer = 800
Engine and propeller = 480
Battery = 30
Rigging = 50s
Anchor and chain = 50
Fuel = 240
Cushions = 40
Fenders = 20
Electronics = 10
Tools, misc =20

Total = 3,540-lbs

My estimates:

BOAT = 3,600-lbs
TRAILER = 875-lbs
ROUGH TOTAL TOWED WEIGHT = 4,500-lbs.

The boat weight estimate is just based on double the hull dry hull weight, which is generally a good guess, and boats often weigh more than double their dry hull weight.

You can get a better trailer weight if you give the manufacturer and model. From the illustration the trailer appears to be an E-Z-LOADER adjustable trailer. With the model number the trailer weight can be found. Add to the base weight if there is a spare tire.

https://www.ezloader.com/images/pdf/adj ... ations.pdf

In this case I used the above linked data and chose a trailer rated for 4,000-lbs that weighs 843-lbs, then added more for a spare tire. If the trailer is a 5,200-lbs model, it will weigh about 1,200-lbs, and add the spare tire.

Boats on trailers aways weight more than you expect.

When towing a boat trailer that weighs 4,500-lbs, you can expect the tongue weight to be about 400-lbs as typical unless the trailer has been carefully weighed and the boat position adjusted to reduce tongue weight.A tongue weight of 400-lbs s about the maximum that many hitches can tolerate, so be sure you check the ratings of the vehicle hitch to determine its capacity. Also, almost all tongue weight is transferred to the towing vehicle rear axle. Be sure to check the towing vehicle rear axle weight limit, and also check the rear tires for their rated maximum capacity. You may find you are very close or even above the weight limits of the axle and the tires due to the added weight from the tongue.