How To Size Your Trailer

When selecting a trailer, there are several key criteria that need to be determined 

For RIB's, Power boats, motor boats and yachts:-

trailer diagram length.png


You will need to know the weight of the boat including all the extras that are going to be carried in the boat including fuel, water, and anchor etc. View our tables below to help you calculate these weights. It always best to allow a small margin, in case situations change. Please also remember to check your vehicle maximum tow weight.


The boat will usually be given the overall length of the boat including overhangs at both ends

In the case of ribs the overall advertised length of a boat will usually include the overhang of the tube at the front and the sponsons at the rear. The main part of the hull that the trailer is supporting is usually about a meter less than the overall length of the boat.

Powerboats and cruisers occasionally have bathing platforms fitted, which overhang the rear of the main hull. It is the length of the main hull that needs to be used when calculating the length of the trailer required. The length of the trailer we quote is the length between bow snubber and rear support on the trailer - as per diagram above.   


Generally, the smaller the boat the narrower the trailer, and the lighter the boat. 


The most popular type of support are the multi roller supports. We also offer keel rollers with bunk supports. 

Here at PDMS trailers we work with the biggest trailer manufactures in Europe, however there are just too many to list. With our own design team we have the flexibility to make trailers in an extremely varied manor. If you have a particular requirement please do not hesitate to contact us to discuss your requirements.

Got a question? Contact us here.

Weights to consider when sizing your trailer:

Outboard Motor Weights Approx. 

Fuel Weight Approx.

Water In Tank Weight Approx.