COR55 & COR60 R.A.V.

All design attention was focused on travel and the yacht’s ease of maintenance.

Many storage compartments provide freedom to store everything you need during cruises.

The on-board equipment has been designed to be simple, effective and, when necessary, easy to repair.

The aft deck with the right half-deck can be completely closed, and an additional hatch will isolate this space during a cruise in a cold climate and when the yacht is in port.

As has a huge FLY DECK with increased load-bearing capacity.

This provides the ability to load large dinghies.

The natural balance has been organized so that the weights on the FLYDECK do not change the trim of the yacht.

The stern platform can be enlarged and can be lowered into the water.

In the COR60 RAV version, the aft deck is large and allows you to accommodate a large table.

Thanks to the excellent experience of the Structeam design office from Great Britain, the structure was designed in a very thoughtful way. In addition to the massive and heavy hull structure, multi-point connection nodes were used.

The Yacht Is Made Of GRP

The first 4 layers are made wet with vinyl ester resin, and fabrics and fiberglass mats are abundantly soaked.

The remaining layers are made using the polyester resin infusion method

The floor of the lower deck forms an intermediate structure together with the system of supporting frames.

The hull at the bottom is very heavy, which helps to lower the center of gravity.

All critical parts of the hull are made of SOLID.

The upper areas, such as the superstructure, are permanently laminated. However, their weight is lower.

Structural grid under the fly deck. Consisting of numerous connections, it is very extensive and provides very good support for future loads from the RIB, additional tanks and equipment located on the fly deck.

Hartop is a lightweight laminate construction.

We use the highest quality structural adhesives to connect the elements and laminate all connections with at least 4000GR.

Companies Used For Component Construction: 

• AOC – Switzerland
• BUFA – Germany
• Scott Bader – UK
• DIPEX/SAERTEX – glass fabrics

Glazing

• CE compliant – A ocean + 20% surplus.
• Pasted and grouted glass
• Tempered laminated glass with a total thickness of 10 to 16 mm depending on the installation zone.
• Storm-coated windows in steel frames are possible

All the hulls we use have been designed directly for us by the office of engineer Grzegorz Władziński. In response to the high demands, hulls were created that combine the following features.

• Sharp bow on the waterline, squat where space is needed inside.
• The almost vertical bow not only introduces a professional character to the silhouette. It allows you to make better use of the space in the interior. A large usable space is created between the bow edge and the collision bulkhead.
• A high bow (over 3m / 10ft from the waterline) reduces soaking of the fore deck.
• Reduced resistance in the speed range of 7-10kts.
• The flattened stern allows a lot of carry when you need to go faster, such as when you want to get away from bad weather or reach anchorage before nighttime.
• The flattened hull at the stern, devoid of the classic V, effectively reduces side-to-side swaying.
• Wide on the waterline. Effectively contributes to increasing stability.
• All weights have been placed as low as possible. The drive engines are placed extremely low. It is also conducive to lowering the rocking arm. Increases comfort on board.
• The additional optional keel performs several functions. It adds buoyancy, allows you to add ballast, lower the center of gravity and increase the strength of the righting arm. Perfectly improves stability and prevents the hull from swinging. It protects the rudders and the screws at the sandbar passes, while the steel fittings of the trousers are secured by the laminate.
• The cutting beak of the pear is not a typical bulbous beak. It does a different job in our hulls. The cutting bow pear perfectly cuts the water in front of the hull proper, causing the water to stick to the hull and hold it as far as possible to avoid creating energy-consuming vortices. In addition, the modeling of its bottom part perfectly affects the comfort of swimming in the undulating sea.
• On request, a stabilization system, active fins are available.
• Our bow thruster tunnels are always designed and then CFD tested. We do it because basic modeling is not enough to contain the water in the vicinity of the bow rudders. As a result of these actions, we know that the water will not flow into the tunnel creating undesirable vortices and resistance.
• We design the exits of our underwater exhausts using the same method.
• The drainage of decks during stormy weather is ensured by storm drains. We always design them and then test their effectiveness. Our drains have a reverse blocking function.

Each Cormorant is equipped with a hard-wire automation system featuring an aesthetically designed control panel with simple, intuitive buttons. Activating a system is as straightforward as pressing a button, allowing most devices to be connected via standard contactors for easy repairs.

For monitoring drive systems and generators, we install the Empirbus automation system, a top-tier European electronic system. This system is adaptable, expanding based on the selected equipment components, and oversees all yacht systems, displaying information on its own screen or an MFD page. Tank levels are also shown within this system, offering extensive expansion capabilities to meet customer preferences.

Switch Cabinets

Each Cormorant has two main switchboards:

1. Engine Room Switchboard: Located at the front of the engine room, it includes main circuits for inverters, chargers, and edge socket protections.
2. Pilot House Switchboard: Manages power source selection and edge socket power selection

• Switching redundant systems
• Supply bag for bilge pumps
• Switching battery banks
• Charging source selection
• The settings are made by means of simple rotary switches on the graphic table corresponding to the power supply system

First and foremost, it is essential to note that regardless of the chosen configuration, the solutions and materials used are of the highest quality, ensuring the utmost safety and many years of trouble-free operation.

Electrical System 

Each CORMORANT 55/60RAV can be built with two different types of power systems, depending on user needs and expectations.

Level 1: This configuration is suitable for coastal cruising, featuring non-redundant systems. It includes:

• One KOHLER 12kW generator
• A 6400W 24VDC/230VAC inverter
• A 500Ah battery bank for all onboard devices
• One shore connection socket at the stern
• CYRIX engine/generator starting aid

Level 2: This configuration is ideal for Long Range Cruising (LRC) and those seeking higher comfort and security. It features redundant systems with a switchable port and starboard layout:

• Two power generators (18kW large and 12kW small) capable of parallel operation and synchronization, allowing the large generator to be turned off at night while the small one operates as needed
• Two 6400W 24VDC/230VAC inverters
• Two 720Ah battery banks
• Two additional 175A engine-mounted alternators
• Two isolation transformers for shore power protection
• CYRIX engine/generator starting aid
• Generators can be upgraded on request in each system 
• The battery type can be changed from AGM to LiFePO4 (Lithium Iron Phosphate)
• Custom sockets, switches, and power architectures are available upon request
• Each power system is user-friendly, with intuitive switchboards 
• Every system includes a separate battery bank above the main deck to maintain radio function and a single plotter with a GPS antenna for several hours in case of total failure
• Each CORMORANT 55/60RAV is equipped with six large grounding plates, ensuring consistent load discharge.

All design efforts were focused on optimizing travel and ensuring ease of maintenance for the yacht.

Ample storage compartments allow for convenient stowage of all necessary items during cruises. The onboard equipment is designed to be simple, effective, and easy to repair when needed.

The aft deck, along with the starboard half-deck, can be fully enclosed. An additional hatch provides isolation for this space during cold climate cruising or when the yacht is docked.

The yacht features an expansive flybridge with increased load-bearing capacity, enabling the accommodation of large dinghies. The natural balance is maintained so that the weight on the flybridge does not alter the yacht's trim.

The stern platform can be enlarged and lowered into the water for added convenience.

In the COR60 RAV version, the spacious aft deck can accommodate a large table, enhancing onboard comfort and functionality.

The COR55/60 RAV features a gravity fuel system with a day tank, supplied from side tanks in the engine room and tanks located in the bow/midship compartment. Tank capacities are customized to meet customer specifications and needs.

This fuel system includes a fuel distributor with a dual fuel transfer pump, a fuel centrifugation and polishing system, and additional dual filters for engines with a switching function. The tanks are equipped with pollution traps and accessible drainage points.

The day tank is designed to collect sediment and water, ensuring that only clean fuel is supplied to the engines and generators. The tanks are constructed from 4mm thick stainless steel, adhering to ISO standards, with added reinforcements. Components outside the engine room are made of durable composites, with tank filling points located on the starboard side.

Additionally, a fuel tank with a pump for refueling the dinghy can be installed on the flybridge.

First and foremost, it should be noted that, regardless of the chosen configuration, all solutions and materials are of the highest quality, ensuring maximum safety and years of trouble-free operation.

Bilge Water

For details, refer to the "Safety First" tab.

Plumbing Installations

The COR55/60 features a spacious keel area for media transport. The configuration of fresh water, gray water, and black water systems is tailored to customer needs. A typical setup includes:

• Fresh water: 1800L
• Gray water: 600L
• Black water: 600L

The plumbing uses dedicated rubber hoses, with anti-odor features for black water systems. Pressure systems are constructed using the VIEGA-Germany system.

Fresh Water Distribution

• The COR55/60 RAV can be equipped with a double hydrophore system to ensure consistent pressure during peak usage. 
• The hot water tank has a capacity of 100L, featuring 3kW / 230V electric heaters, and is heated by the engines.
• A 60L/ 16 gallon hot water tank is available for the Master cabin upon request.

Gray Water, Toilets, and Wastewater Management

• Gray water is collected in drainage chambers with easy access for cleaning and is pumped into the gray water tank. 
• The yacht is equipped with Tecma toilets with 230V high-capacity macerators, flushed with fresh water. 
• The control panel indicates when the tank is 3/4 full.

Emptying Sewage Tanks

There are two methods for emptying tanks:

• In Port: Black water tanks can be pumped out, while gray water is transferred to the black water tank for cleaning. A rinsing valve next to the sewage suction point allows fresh water to clean the tank.
• At Sea: When permissible, gray and black water tanks can be emptied directly into the sea using a sewage pump.
• The pump and valve configuration allows tank emptying with a single pump by manually switching valves. 
• The black and gray water pumps are interchangeable for redundancy. 
• In LRC configurations, an additional hand pump is installed for both types of water.
• Tanks feature dense partitions to prevent overflow and are equipped with open-access inspections. 
• Ultrasonic liquid level sensors with tank shape compensation ensure accurate readings on the control panel.

Deck Washing and Anchor Washing System

• A freshwater deck washing system with quick-disconnect points is available upon request. 
• The anchor and chain washing system can be set up with fresh or pressurized salt water.

Air Conditioning

• The COR55/60 RAV includes a cooling and basic heating system. 
• The cooling system has the option to limit compressor capacity at night. 
• LEVEL 2 electrical systems can operate the air conditioning overnight without a generator. 
• Configurations for moderate or tropical temperatures are available. 
• The heat pump / chiller heating system can heat to a water temperature not lower than + 6 ° C / 43 ° F
• The heating system can include a WEBASTO diesel stove with a 15kW capacity for additional heating.

Extensive Heating System

• The extensive cooling system is usually mounted to the LRC configuration, and to use the yacht permanently in cool waters.
• The system collects heat from engines and generators and transfers it to the air conditioning system via hydraulic coupling. 
• The same devices used for cooling facilitate heat exchange. 
• The system includes a WEBASTO diesel stove and works with installed boilers.

General Ventilation System

• Ventilation system with independent exhaust fans for each cabin. 
• A smoke detection system can be installed upon request. 
• The salon and kitchen have a separate supply/exhaust ventilation system, independent from the kitchen hood. 
• The pilothouse has an advanced ventilation system with window cleaning capabilities. 
• A central vacuum cleaner system is also available upon request.

The hull has been designed so that the yacht is very effective in the range of 7-10kts.

Changing times and user trends have influenced the design of the hull, which can move faster. The most common reason is escaping to a port to escape bad weather and limiting time in open waters when traveling, e.g. between islands.

That’s why we give customers the opportunity to choose between several drive systems. The largest of them, 2x400Hp, allows you to achieve 14kts.

The drive configuration is a typical twin system. It ensures quiet operation and excellent maneuverability. This system is fully redundant.

To minimize maintenance needs, we recommend a keel cooling system and a dry exhaust system. In this case, to reduce smoking when starting a cold engine. The engines are equipped with engine block heaters. This solution additionally reduces the wear of an underheated engine.

It is possible to order a yacht with one main engine located centrally and a wing engine with lower power. This solution will slightly lower operating costs.

The drive of a yacht sailing around the world must be easy to operate. Consumable parts are easily available and inexpensive. Widely available service and engines known everywhere.

Engines meet exhaust emission standards around the world.

We focus on two engine families: JOHN DEERE 6.8L and JOHN DEERE 9.0.

For installations with dry exhaust and keel cooling, these are models 6068AFM85 & 6090AFM85.

For installations with a wet exhaust system and heat exchanger, specifications with seawater subcooling of the charged air are possible. These will be the 6068SFM85 & 6090SFM85 models.

Each engine can be selected in the rating M1 to M4.

We recommend 230Hp for the 6.8L engine and 285Hp for the 9.0L engine. This will allow for greater system efficiency at speeds of 7-10kts.

The shaft line is angular with an inclination of 8°-10° and a four bladed propeller with a diameter of 40″

• ZF 85A series gears, gear ratio i=2.5

propeller rotation speed at 7kts.

6068AFM85 M1 230HP = 480RPM

6090AFM85 M1 285HP = 400RPM

• ZF 301-1A series gears, gear ratio i=2.9

propeller rotation speed at 7kts.

6068AFM85 M1 230HP = 413RPM

6090AFM85 M1 285HP = 344RPM