Serenity 550 Fitness

The big water bike for whole body training or just for relax.


Eco catamaran - Arko ONE

The concept of 21m length big houseboat - five cabins with bathroom.


Serenity 550 Electric

Small eco catamaran powered from LiFePO4 battery.

We design and organize production of eco boats.

Just better boats for a better relax.

Especially we like if there is any unique requirement for design of electric boats.
We can also design and organize production of any non-standard part of composite or metal if you need.

Unique water bike or electric boat?

Serenity is absolutely right solution.

Have you ever seen such a catamaran?
Rowing, hands pedalling and legs pedalling in one boat or just a fully electric boat?
You decide about final deck arrangement.

We like to spend time on water. It is nice to use SUP, kayak or water bike in peace and quiet.
It is also good to stay sporty with ride a bike and workout in the gym with friends.
So, why can’t we do it all at once?
And the simple answer is: because it is difficult to imagine a suitable floating equipment for this.
That is why we have designed this unique big water bike with electric support drive.

Now we can!

Serenity 550 Fitness.

The big water bike.

Available in few versions.

In fact this is an open project.
It means that a client can decide about final arrangement, set of drive stations and seats, sunroofs or maybe fixed roof with PV panels and walls.
For example someone would need only helmsman drive station and five seats for passengers on double or single seats.
No problem. You decide.

And here is a small, fully electric boat for those who do not like any water bikes.

In general we prefer a silent and zero emission drives.

Small electric boat fo short trips

The offer for people who do not associate relaxation with movement.
It is enough for them to stay on the water with their family or friends.

The proposal of a very interesting electric boat.
Non-standard appearance, easy, comfortable and safe operation.
You decide about the final arrangement of the deck.

Serenity 700 – electric, recreational boat

Small tourist boat ensuring lots of fun on the water without disturbing peace and quiet of other people enjoying their rest in the vicinity.
Available in various colours, outfitting and arrangements.


Our first choice is electric motor because it is much higher efficient than diesel or petrol engine. Additionally electric motor is simple, quiet and clean.
The motor is powered by LiFePO4 battery kit of total capacity amounting to 300Ah. This is enough for the boat to carry passengers for ca. 6 hrs. with the speed of 5.5kn. The battery is charged from regular power socket for up to 6 hrs.
This kind of propulsion requires no maintenance on the user’s part except for connecting the power cable to wall socket. Of course the batteries require special care in order to maintain their longevity with full capacity. However this is commonly known from using batteries in laptops or smartphones.

This electric boat is proposed in three different versions:


Even if you are not a supporter of eco drives or simply need a boat for a longer cruise without necessity for charging you may still use the Serenity boat. We have provided solutions for such situation.

First of all we suggest a hybrid drive in such situation. A small an quiet diesel generator will be installed on board to charge Li-ion battery.

Another and very simple solution is a small outboard engine. Transom and stern are ready for such situation.

And what about any little bit bigger eco boats?

There is our proposal beside.
The concept of eco catamaran as a big house boat.

Few interesting boats designed by our friends: