FAQ

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How are the fins controlled?

The fins are managed through a touch screen plus a back up control panel that are positioned on the bridge. The system can work automatically (adaptive mode) leaving the electronic regulator set up the speed and angle rotation of the fins or manually (Manual mode) to enable the captain to set the control parameters at his convenience.

What is the difference with a gyroscopic system?

It is hard to compare the two systems because they have different operating technologies. The fin stabilization system has lower weight, volume and power absorption and has external appendages to the hull. The gyroscope has a rather high activation time (usually 40 minutes) while a fin system has an immediate operation start. Also, the system with fins (both electric or hydraulic) has a much greater possibility of application: in fact they can be installed even on very large boats over 60 meter while it is quite difficult to install a gyroscope system on yachts over 100 feet.

Which are the difference, if any, among a stabilization system for a system with underway operation mode only and a system with at anchor mode?

In the at anchor stabilization the system will be sized for loads that require a higher torque and a drive speed, then the installed power will be higher and the components larger and stronger.

Which are the difference, if any, among a stabilization system for a planning hull and a displacement hull?

For planning hulls the system is used when the boat is at anchor. So that the system will be designed to achieve the maximum efficiency with the boat at rest without increasing the resistance. The fin is usually smaller than a fin designed for a displacement hull

What happens to the fins in case of failure of the electrical system?

The electronic control system, one of the main points of the stabilization system will activate the procedure to put the fins in a safe position.

The components of the system is subject to wear?

No

Is it possible to use the stabilization system when the boat is moored?

CMC Marine has created a software – DOCK MODE – that can be activated during operation at anchor. Activating the dock mode reduces the maximum angle that can be performed from the fin. This mode allows to operate at anchor also in places where the excursion at ± 40° could bring the fin to hit against external objects.

How is possible to size the system?

It ‘simply fill out the “Request for Quotation” form commercial or office to receive an assessment of the local representative in relation to the size of the boat.

What’s the cost difference between a system that includes the at anchor mode in comparison to one designed to be used only in navigation?

In navigation the fins work with lower torque and power absorption, that means that a system working only underway mode can have smaller fins and a smaller motor, consequentially it may have a lower price.

Where is it possible to buy a CMC Marine stabilization system?

Is it possible to buy a system directly with CMC Marine Ltd or its distributor. See contact page

What is the warranty?

The warranty covers any manufacturing defects for 18 months from the system commissioning up to 24 months after delivery of the material.

Does CMC Marine install their systems?

CMC Marine does not install their own products, but provides all the technical information necessary to make a perfect installation. If necessary, CMC Marine engineers can supervise the operation of assembly and installation.

What are the structural measures needed for the installation?

It is necessary to proceed with the construction of hull reinforces to support the load of the fins. These reinforces must be designed and dimensioned by specialized technicians.

Where the fins must be positioned?

The fins should be placed as close as possible to amidships. The exact definition of the position of the fins must be calculated by a qualified technician.

The Stabilis Electra is “EU Patented n. 2172394”. What does it means exactly?

Since its foundation CMC Marine committed itself to be on the technological cutting edge. This meant the company focused its strategies on a strong R&D approach steadily developed in accordance with the extensive engineering Company’s background of marine system solutions. Thanks to this continuous commitment to R&D process CMC Marine could developed a range of very innovative products. Including the worldwide famous Stabilis Electra, the first and unique stabilization system actuated with an electrically drive instead of a hydraulically. Due to its highly innovative characteristic, the Stabilis Electra, in January 2012, obtained the European Patent(EU Patent N. 2172394).

The EU Patent assignment means CMC MARINE IS THEREFORE THE ONLY COMPANY authorized to produce, distribute and sell a stabilization system electrically driven within Europe, including the necessary custom protections and that IT IS ILLEGAL for any other fin stabilizers producer produce and distribute in Europe a stabilization system moved with an electrical drive.

What is the CMC Marine electrically actuated fin stabilization system and how is it different from a hydraulic actuated system?

The electrically actuated stabilization system named Stabilis Electra is an international patent of CMC Marine. The system is characterized by the fact that the movement of the fin is through a mechanical system which is directly connected to a brushless electric motor instead of through a pair of hydraulic cylinders connected to a hydraulic system as in the case of conventional hydraulic systems.

How does a CMC Marine electrical stabilization system work?

From the functional point of view the system behaves similarly to a conventional system with hydraulically actuation. The stabilization of the yacht is due to the movements of the fins whose effect is to counteract the roll of the ship. The main difference is that the electric actuator absorbs less power for equal torque and has a better dynamic (speed and angle are larger) thus providing a wider range of applications.

What are the advantages of the Stabilis Electra with respect to a conventional hydraulic system?

The advantages are manifold. The Stabilis Electra system is lighter, has smaller volumes, is quieter and having a limited number of components is relatively simpler. In addition, with no hydraulic components the installation is much faster and easier and therefore cheaper, as well as the maintenance is minimal: it is enough to make periodic visual inspections. Therefore, the biggest advantage lies in its performances. The actuation with an electric brushless motor has a much better dynamic and a much faster response than traditional hydraulic technology.

How many components are in a system?

In a standard system with two fins there are:
2 actuator connected to a fin plus
4 connection cables
2 hull bushings
2 EPU power electronic switchboard
1 ECO control electronic switchboard
1 intertial platform
1 DIA-LOG electronic system with control panel and integrated touchscreen

Is the system working with the boat at anchor?

Yes, especially because of the intrinsic high dynamic characteristics of the system, this is the ideal system for stabilization at anchor.

What kind of power is required to operate the system?

The system works with triphase 220V or 380V power.

How much is the power absorption to operate the system?

The power varies depending on the model. In general, however, the maximum absorption of the Stabilis Electra is about 40-50% less than a comparable hydraulic system. Also, although each system varies depending on model and type of boat on which is installed, the power consumption average is a very small percentage of the total capacity installed on board. The system works with triphase 220V or 380V.

How heavy is a complete system?

The weight varies depending on the model. In general, however, the maximum weight of Stabilis Electra is about 40-50% less than a comparable hydraulic system.

How much noise does the system generate?

The system noise levels are very low but vary depending on the type of boat and type of insulation provided by the shipyard. Recordings taken at one meter distance says indicative noise levels are, at maximum speed and angle of rotation: 60dBA. In navigation: 50 dBA. At anchor: 56 dBA

Does CMC Marine install their systems?

CMC Marine does not install their own products, but provides all the technical information necessary to make a perfect installation. If necessary, CMC Marine engineers can supervise the operation of assembly and installation. The installation must be done in a shipyard able to do it.

Can the thrusters be installed on an existing boat which had no thrusters?

Yes, both electric and hydraulic thrusters can be easily installed even in after-market. In particular, because of its easier installation electric models are generally preferred.

What is the right thruster for my boat?

The choice is based on the main parameters of the boat: the length of the boat, its type, the area of the exposed surfaces, the available power onboard and the strength of the wind that must be counteract. With this values the necessary thrust is calculated and consequentially the suitable model can be selected. Upon request, the technical office of the CMC Marine is available to suggest the most appropriate model.

What are the available powers?

CMC Marine is one of the few manufacturers in the world able to offer the market a very wide range of thrusters including a high power electric thrusters. In detail, the Dualis Electra electric thruster range from a minimum of 18 kW to a maximum of 130 kW. The hydraulic thrusters ranging from a minimum of 20 to a maximum of 55 kW.

What is the difference between electric and hydraulic thrusters?

The electric thrusters have a big electric motor positioned directly above the tunnel. This means that there is much more weight at the bow but the installation is much more simplified. On the other side the hydraulic thruster needs a carefully designed and built up hydraulic system based on many more components that make the installation more complex and expensive. To overcome the problem of the high volume and weight of the electric motor, CMC Marine has developed a range of electric thruster, the Advanced Series, that are equipped with a new electric motor, much lighter and compacter that the standard electric motors.

When the proportional control is better than the On-Off Control?

The proportional control is useful for great power to allow a more precise calibration of the thrust required for boats with high displacement.

Is it possible to install the CMC Marine thruster both horizontally or vertically?

The CMC Marine thrusters are designed for maximum use flexibility. They can be mounted either vertically or horizontally.

Is it possible to use the CMC Marine thruster both as bow or stern thruster?

It is possible. The only difference regards the tunnel, the coupling and the motor support

Where is it possible to buy a CMC Marine stabilization system?

Is it possible to buy a system directly with CMC Marine Ltd or its distributor. See contact page

What is the warranty?

The products are covered by warranty for a period of 24 (twenty-four) months starting from the first commissioning of the system and in any case not more than 36 (thrirty-six) months from the delivery date. With regards of  C products  installed on commercial use units, the warranty period is of 12 (twelve) months from the first start up and in any case not more than 36 months from the delivery date.

Who can install the system?

Since the installation of a stabilization fins provide hull passages it must be done in a shipyard. One of the great advantages of the Stabilis Electra system is its installation ease that saves up to 200 hours for mounting.

Is the system suitable for installation on existing vessels?

Absolutely. The Stabilis Electra system is the ideal system for yacht refit, exactly because of it is limited number of components and because the total absence of hydraulic systems that make it much easier to install also on an existing vessel.

How much space do need a system?

Where components are to be installed? One of the main feature of the system are the reduced volumes also considering the fact that there no piping. In addition to the actuators and fins mounted on the hull, a Stabilis Electra system needs space for a power switchboard in the engine room, for a control switchboard and for a control panel on the bridge.

Are there any integration with other systems onboard?

The power switchboard is connected to the onboard generator to supply power to the actuator and to the batteries to have 24V power. The control switchboard is connected to the GPS and to the batteries for 24V power.

How and when system maintenance must be carried out?

All the components of Stabilis Electra are designed for intensive use. Routine maintenance is minimal, is sufficient to lubricate the bearings and proceed with regular visual inspections.

What is the maximum yacht size the Stabilis Electra can be installed on?

The range of fins Stabilis Electra is composed by 7 models: SE40, SE60, SE80, SE120 and 120 xp, SE180 and SE200 with a fin range from a minimum of 0.60 sqm to a maximum of 4.00 sqm. This means that, approximately, the boat range suitable for the Stabilis Electra goes from between 18-20 meters up to 60-70 meters.

What is the maximum roll reduction as an average?

In navigation between 90% and 98% depending on weather and sea conditions and characteristics of the boat At anchor between 50% and 65% depending on weather and sea conditions and characteristics of the boat

Can the system be operated with four fins as well?

Yes.

Can water damage the engine?

The electric motor is a standard industrial electric motor. It is IP67 protected (the shaft seal is IP65). It can be also provided, upon request, with a covering carter to protect the actuator from possible accidents or damages and coated with noise insulation material.

What happens in case of overload of the motor?

Nothing. There is a overload setting which is set to 180% of the nominal power rate. The motor is limited so it’s not possible to overload the system over the overload setting. If the fin requires more than the project torque (i.e. impact of the fin with an underwater object) the system firstly goes in protection and then restart the normal activity.

What happens to the fins in case of failure of the electrical system?

The electronic control system, one of the main points of the stabilization system will activate the procedure to place the fins in the safe position.

Is there any heating issue?

No.

Does the system needing a cooling system?

No

WHERE TO BUY

For more information on our products, how they work, technical specifications, please contact us. We will get back to you as soon as possible.

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