Serenity 550
Small catamaran as universal floating platform for building boats with various functions.
When defining the main design assumptions, we were aware of how difficult it is to enter the market with a new product.
- We needed a multi-variant design that could be easily adapted to the various needs of potential customers.
- Such a project should not be expensive when building a prototype.
We have no problem with ideas for new things.
The idea was born to design a catamaran with identical floats, connected by a simple, open deck.
Serenity 550
universal floating platform
Length 5.5m, breadth 2.5m, height 1.05m
Based on this platform, you can build boats with various functions.
- The deck is a sandwich structure with a thickness of abt. 30 mm.
- The floats are divided by bulkheads into four watertight compartments. Each of them is equipped with an inspection hatch with a diameter of 20cm.
- The whole platform weights abt. 360 kg.
The float is designed without a sharp end of the waterline at the bow, so that its entire length can be safely used without excessive trim at the bow.
The prototype's deck looked completely different
Wooden, simple, easy to process – temporary.
With the first prototype, we tested the catamarans’s response to heeling and trim.
The tests were positive.
The boat turned out to be very safe.
At this point we would like to say that we are not a shipyard. We outsource all production work to subcontractors.
Regardless of the boat version, you need a drive column that transmits rotation to the propeller.
Our column rotates 350 deg. in both directions, what means it serves as a rudder.
Without changing the direction of rotation of the propeller, you can sail forward or backward.
Of course, changing the direction of rotation of the propeller is also possible.
We believe that using large, loud combustion engines in small waters spoils many people’s vacation.
Therefore, when defining the assumptions, we moved towards electrical solutions.
However, this does not prevent the platform from being used for projects with combustion engines.
It all depends on your needs.
Serenity 550 Electric
Full electric version of the catamaran
Technical data:
- Catamaran
- Length: 5.50m
- Breadth: 2.50m
- Depth to deck: 1.05m
- Air draught: 3.00m
- Min. draught of floats: abt. 0.3m
- Max. draught of flaots: abt. 0.65m
- The propeller in the working position descends 15cm below the bottom of the floats.
- Propeller: 16″x14″, 2-blade, driven via L-type column (swinging and rotating 350deg)
- Speed max. at max. draught is abt. 5.5kn (abt. 11km/h)
- Stearing wheel: 28cm. Above the steering wheel a propeller position indicator is located.
- The control panel includes: an ignition switch with a stop button, a speed mode switch (3 modes) and a small gear for changing the engine speed.
It wasn't easy, especially with the drive.
It is difficult to find a suitable electric motor with the appropriate power and speed, it is difficult to find a suitable, light propeller, and the worst thing is the battery.
It seems that the topic of batteries is already very developed on the market. However, when the details are agreed and then price offers received, it turns out that we have to go deeper into the matter ourself.
So we went in. We assembled the appropriate battery ourselves.
Technical data:
- The drive consists of a 3-phase electric motor controlled by an inverter – 2.3kW, 1500 rpm max.
- The battery consists of 16 LiFePO4 prismatic cells, which gives 51.2V and 300Ah. The weight of the battery is 160 kg. Assuming the use of 80% of the capacity, you can swim for over 5 hours at max speed and max draught.
- There is a charger on board with a maximum power of 4kW, powered from a standard 230V socket. To achieve the full power of the charger, a current of 30A is needed.
We ordered a propeller design for this version to obtain the highest possible drive efficiency.
It turned out that the best parameters would be provided by a 2-blades propeller with a diameter of 420 mm and a pitch of 300 mm at 600 rpm.
The project is prepared to use 3D printing technology.
Serenity 550 Fitness
Muscle-powered version with electric support.
Technical data:
- Catamaran
- Length: 5.50m
- Breadth: 2.50m
- Depth to deck: 1.05m
- Air draught: 3.00m
- Min. draught of floats: abt. 0.3m
- Max. draught of flaots: abt. 0.65m
- The propeller in the working position descends 15cm below the bottom of the floats.
- Propeller: 16″x14″, 2-blade, driven via L-type column (swinging and rotating 350deg)
- Stearing wheel: 28cm. Above the steering wheel a propeller position indicator is located.
- Stations for pedaling with legs, legs and arms at the same time, and for rowing.
- The gear shift knobs are mounted on the seats.
