RM Yachts know-how

How is your rm built?

RM Yachts are “composite”, as much as the best materials are carefully selected for each part of the boat.

Plywood for the general structure – Epoxy stratification for the assembly – Iron for the keel – Polyester sandwich for the roof – And from now on epoxy sandwich for the planking above waterline (1180).

 Think about a wooden house, with concrete fundations, a roof with tiles and windows frames made of aluminium.

RM are in constant development to improve our performance level as well as the quality of our products.

Most of our engineers have been with us for almost 20 years, so they clearly benefit from a very valuable owners feedback.

First step:

The hull and its structure

For the structure, we use high quality plywood : CTBX, full Okumé, with Class-3 gluing. Thickness varies between 12 and 15mm, depending on the RM model.

The hull itself is in marine plywood, with panels of 15, 18 or 22mm depending on the parts and of course the RM model.

The laser-cut panels arrive at the shipyard, ready to be assembled and glued.

The assemblage is done on a template mold, integrating the iron part which will support the keel(s).

It is done « upside-down » for a better holding and an easier access.

Gluing is done with a bi-component epoxy.

Then come the plankings, made of plywood too, (except for the RM1180), which are mechanically hold so that they fit with the hull shape.

Second step:

Demoulding

Just before demoulding, we run an inspection of the bulkheads. Each of them being structural, they are stratified to the hull. We make sure the joints are neat and smooth.

The hull is then craned up, and the stratification finalized.

Please note that every single piece of plywood is coated with epoxy, so that it is watertight and contribute to the overall stiffness.

The hull is now ready.

Third step:

Interior works

The inside is painted in white before we start the following :

  • Electricity
  • Plumbing
  • Tanks installation
  • Engine & accessories installation (batteries)

Depending on the model, some furniture are always installed at this stage, before the access becomes tricky…

Fourth step:

Deck preparation and installation

When the deck arrives at the shipyard, we use plywood again for the counter-molding, and install the anti-slip painting as well as some of the deck fitting.

What makes RM technique special is that once deck is positionned over the hull, we apply another layer of epoxy to stratify it to the hull. This junction becomes invisible, totally watertight, and highly contributes to the global stiffness.

From this stage, one may consider the boat is just one piece (hull+deck).

Fifth step:

Hull customization

The colour of your dream is the result of a succession of tasks.

Back to step1, we apply epoxy on the upside-down hull and sand it.

Now we can start with a primer, thick enough to ensure the smoothness.

A second primer, thinner this time, is then applied. It improves the touch & feel.

Another sanding is then made, before the last primer – ultra-thin polyurethane – is applied. This is the last layer before we can finally spray the lacquer – the one of your dream colour !

Sixth and last step:

The final fittings

Once the yacht has reached this final stage, we install windows, deck fitting, some added carpentry and plumbing.

Last, we crane the yacht to install her rudders and keels.

A truck will come and pick her up, and once she splashes at destination, mast and rigging will finalize the building process.