ULTIMATE TRAWLER YACHT
It is an excellent travel yacht. Prepared to spend many months on board. It is ideal for long expeditions without losing comfort.
The space of this yacht allows you to feel at home without any limitations in space.
The entire project is focused on obtaining very good characteristics for durable Trawler Yachts.
a very high bow in the shape of an axe, works very gently on the wave without causing nervous movements. The mass of the yacht favors reliable cutting of waves.
The construction of the yacht is extremely durable, very high structural girders, thick plating provide very high stiffness.
Like each of our yachts, COR850 is built only to individual order and in close cooperation with the client, realizing his needs.
Both the equipment and the style of the equipment depend on the client’s expectations.
The COR850 has a carefully designed underwater hull that gives high efficiency results for long distance speeds. 16l/h total at 7kts and 25l/h total at 8kts.
PROPERTIES | [m] | [ft] |
LOA Length overall | 26,3 | 86.4 |
BOA Beam overall | 6,25 | 20.50 |
LWL Loaded waterline length | 22,45 | 63.7 |
BWL Beam at the waterline | 6,1 | 20.01 |
T draft | 1,78 | 5,84 |
DA draft air | 7,95 | 26,08 |
D(T) Loaded displacment | 82 t | 180k lbs |
CE APPROVAL CATEGORY | A OCEAN | |
Maximum capacity | 12 people | |
Hull type | Fast-displacment with ETE (Extended Trailing Edge) | |
Hull Meterial | GRP | |
Superstucuters / Deck | GRP | |
Sleeping Cabin / Places | 5 for 9 People + 2 for 4 Crew | |
Enigne Horse Power | from 2x500 to 2x800 MAN+ZF | |
Speed | 7-16kts | |
Averange range at 7kts | approx. 6550 NM 15%reserv |
POSITION | NAME | |
Naval architect | Grzegorz Władziński | |
Analysis CFD and improv. | Grzegorz Władziński | |
Conception designer | CY Damian Dymecki | |
Exterior designer | CY Team | |
Interior designer | CY Team | |
Construction designer | STRUCTeam LTD UK | |
Builder | Cormornat Yachts Shipyard Gdańsk |
PROPERTIES | [L] | [GAL] |
Diesel total | 15000 | 3962 |
Potable water tank | 350 | 92,47 |
Fresh water tank | 2500 | 660 |
Gray water tank | 800 | 211 |
Black water tank | 800 | 211 |
For yachts configured as Long Range Cruiser, an additional mechanical driven pump is installed directly from the main engine. As the hull has a sandwich structure, it can be assumed that during a collision, e.g. with a shipping container, the plating will become unsealed but not torn enough to create a significant hole. In line with this, an additional pump will constantly pump water out of that section.
More information is contained in the individual specification ranges on the following sheets
Thanks to the excellent experience of the design office Structeam from the UK, the structure has been designed in a very thoughtful way. The weighted months are made of a very large amount of reinforcements and a significant thickness of the laminate. However, in places where the structure does not carry loads, it is lighter. Such a method is typical of sophisticated methods of designing advanced yachts and it boldly displaces methods in which heavy structures are installed without much justification. Instead of weight, we use sophisticated materials and infusion lamination. Weight is the basic parameter influencing the economy of swimming. Thus, this aspect contributes to the definition of our units as ecological.
Construction type: GRP – all parts manufactured in Vacuum Infusion Process
Primary materials :
Finishing laminate surfaces
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.
We do not use traditional pressure bulbous bows as they are only suitable for one speed. Instead, we use a more useful solution. Cutting bow that increases efficiency with speed.
Checking the correctness of the arrangement of storm drains. Pre-calculated openings based on the guidelines of classification societies. We check many CFD analyzes.
We have completed complex CFD analyzes confirming the high seaworthiness of our hull for the 690 and 780 models.
We used a yacht loaded with 3/4 of its capacity for the analysis. although it is not visible on the model, the input data includes the weight of 750 kg on the flydeck as a dinghy.
The versions with an extended keel but without additional ballasting were adopted. The stabilizing devices are not involved in these tests. We want the analyzes to take place with the worst scenarios.
The wave taken in the analysis has a high frequency, which is particularly dangerous at sea.
In addition to research at sea. We performed an examination of the straightening arm.
Righting lever force test for heel to port 90 °
One of the worst situations.
This is particularly difficult due to the enormous amount of water taking up on the decks. Please pay attention to the work of the water drains from the decks. How important is their size and location.
As the effectiveness of the rotors is already very noticeable at low speeds, the risk of seasickness is minimal.
The innovative system drive ensures far fewer moving parts, resulting in reduced noise level. The MagnusMaster is simply very quiet.
The control of the system is user-friendly and can be integrated into the onboard system. Operation is simple via an easy-to-read full-colour touch screen.
The MagnusMaster has been developed for your convenience.
Roll damping with the MagnusMaster is much more effective when the yacht is at speeds of 3 to 12 knots.
The MagnusMaster is fully electric and directly driven, eliminating the need for a fan belt. Maintenance-free bearings are used around the shafts. DMS has kept the technology as simple as possible, so that hydraulics, pumps, cylinders and pressure pipes are not necessary. This makes leaks and other hydraulic-related malfunctions, as well as unpleasant noise, a thing of the past.
Your MagnusMaster stabilisers do their job worry-free, safely, quietly and very effectively.
The entire system is electrically retractable, preventing damage in shallow water. When retracted, the rotors remain within the turbulent boundary layer of the hull and resistance is therefore negligible, producing a favourable effect on fuel consumption. When retracted, they are almost impossible to damage during transport.
Because the rotors do not have any steering effect, the positioning — unlike with traditional fins — can be freely determined and a suitable place can always be found to install the very shallow and compact electric motor. Loss of space is therefore kept to a minimum and major renovations in the engine room are not necessary.
At DMS, the safety of people on board is key. That is why the rotors are automatically retracted when the vessel’s engine is put into neutral or the drive drops out. This prevents damage during maneuvering and mooring at a quay, lock, harbour or around other vessels and safety is guaranteed.
The operation of the DMS ARG is problem-free. Zero speed stability is guaranteed for fast yachts and slow sailing yachts and is suitable for all hull shapes. In addition, the operation is much quieter than other gyros on the market and gives optimal results faster. Another advantage is the considerably shorter ‘read-out time’. Due to the larger gimbal angle – 180 degrees instead of 120 degrees – the DMS ARG responds better to higher waves. In other words, more damping of roll movements.
The fundamental concept and construction are much more durable due to the reduced design complexity compared to other providers in the gyro market. Smart thinking results in:
No penetrations through the hull; only a solid foundation needed
No need for water for cooling or a hydraulic system to operate fins
An exhaust fan only preferable in a confined space
Maintaining a vacuum is not necessary
Reduced complexity means fewer parts for maintenance or breakage
Air cooling has long since proven itself to be completely problem-free. The ARG has been running for years in various engine rooms of large commercial ships. It gets much hotter there than in any engine room on a yacht
Significantly longer service intervals that are easier to check thanks to read-outs
The ARG originates from the development of gyros for a space station. That high quality is incorporated in the ARG placed in your yachT
Ultimately, of course, it is about results. Comparative tests have shown that:
The DMS ARG is operationally faster than the alternatives available from other suppliers
Using a larger gimbal swing angle of 180 degrees guarantees stabilisation for longer in higher waves. This makes the torque output the highest in the market
The focus on durability, and therefore to keep maintenance requirements as low as possible, was already addressed during the design phase. That makes the shipyards’ job much easier. What else can you expect?
Installation is simple. There are no hull penetrations, only a solid foundation is needed
The relatively simple installation makes retrofitting possible
There is no electrical control unit resulting in far fewer malfunctions and a high level of safety
The bearings of the DMS ARG last up to 5x longer than those from competing brands
No water cooling required, meaning maintenance intervals are much longer
Simplicity was the starting point in the design. That has resulted not only in excellent durability, but also much lower production costs for the DMS ARG. The price/performance is therefore the best in the market. In short: the more torque, the greater the price advantage compared to other providers in the market. Up to 40% cheaper!
Yacht Systems Control
For reliability, ease of use, and future maintenance, the yacht’s systems are controlled using traditional FINDER switches and relays. Traditional fluid level indicators are used. All information is displayed directly on the indicators or controls located on the bridge. Any repairs are carried out on individual components, not the entire system.
The entire system is ergonomic, aesthetically pleasing, and well-built.
This solution does not limit the additional presentation of data on MFD screens, which serve as a supplementary function.
Each COR850 is equipped with twin Kohler generators (18kW and 28kW) capable of parallel operation, providing a combined output of 46kW, significantly exceeding the yacht’s typical power requirements. Additionally, each propulsion engine is fitted with a 100A alternator. Two Victron Energy Quattro 6400W inverters and a substantial 1440Ah battery bank ensure a comfortable and reliable power supply.
Equipped with two radars with open 4ft and 6ft antennas. AIS transponder (transmitting and receiving data) Satellite compass GPS receiver AIRMAR WX-200 weather station with heating, backup GPS receiver and compass, gyro. All data is presented on 4 x 24” touch screens.
The first system is based on SIMRAD PRO and SIMRAD COMMERCIAL components and provides direct access to functions.
The second system is based on FURUNO components, a PC and TimeZero Professional software.
PILOT SYSTEM Based on SIMRAD COMMERCIAL devices:
PROCESSOR – AC70
1st Control panel AP70MK2 – Pilot House Steering actuator
FU80 – Pilot House
2nd Control panel A2004 – Flybridge Steering actuator
FU80 – Flybridge
PUMPS – Double hydraulic pumps mounted on propulsion engines KOBELT 150 distributor Emergency steering system on the electronics side, bypassing the autopilot system with additional steering.
COMMUNICATION
Short range:
VHF 1 – ICOM IC-M605
VHF 2 – ICOM IC-M605
VHF 4 – Handheld ICOM M94
GSM LTE cell phone amplifier
Long range communication Satellite – inReach 2 MARINE imersat communicator Satellite – STARLINK system
Internet: PEPLINK BR1 5G class router Starlink
Antennas SET – Sheakspear CLSSIC AND GALAXY SERIES – 6dbi and 9dbi 5G cellular and internet antennas
DESIGN
When designing our yachts, the main emphasis was placed on the function and presence of the yacht owner as the capitan. Our yachts, despite their large size, can be driven yourself if you want. We will adjust the equipment so that it is possible without stressful situations.
You can also hire the crew if you want. Our project is prepared for this.
In fact, there are no contraindications for which a full-blooded travel trawler could not be nice, comfortable, with places for sunbathing and fishing from a spacious swimming platform.
So we did it.
Our designs are original because they perfectly combine the travel possibilities of yachts with a calm design. We have not deprived our yachts of elegance to look like an old fishing boat. At the same time, they are not targeted at one group of customers.
Our yachts are liked by both great travelers as well as those who begin their adventure with yachting and who want to sail along the coast.
Both of them share the same feature, the willingness to sail a yacht that is well-designed and perfectly made. A yacht where everyone can contribute during construction.
Our yachts combine all the best features of old Taiwan or US trawlers, but do not have any of their disadvantages
All our yachts will be built in our design office. The entire team has a direct impact on the projects. Both architects, technologists and system engineers.
HIGHLIGHTS
Below we present charts on the basis of which you can get an idea of the range of our yachts. Please note that these values apply to yachts with standard equipment. additional tons in the form of optional equipment or the amount of fuel in additional tanks will affect the power demand and, consequently, the reduction of the range.
Each CORMORANT can be configured with additional fuel tanks.
First of all, it should be noted that regardless of the adopted configuration, solutions and materials are of the highest quality to ensure the highest level of safety and many years of trouble-free operation
See description in the SAFETY FIRST tab
Fresh water distribution.
Gray water, toilets and waste water management
Emptying in the port. Could be pumping out the black water tank. While gray water is pumped into the black water tank. This solution helps to clean the black water tank. In addition, next to the sewage suction point, there is a rinsing valve, through which we can supply fresh port water, for cleaning the tank. The valves are located at the PilotHouse in degrees on the half deck starboard
Emptying in the sea. When the rules and common sense allow it. The gray water tanks are emptied directly into the sea using a sewage pump. The same has been solved for emptying black water.
WINDSHIELD WASHING SYSTEM
DECK WASHING SYSTEM & ANCHOR WASHING SYSTEM
AIR CONDITION
EXTENSIVE HEATING SYSTEM
GENERAL VENTILATION SYSTEM
The entire propulsion system is of commercial grade, adhering to the proven German engineering standards. The COR850 is equipped with three different propulsion options, all based on reliable components. These options include MAN engines, ZF gearboxes from the German 2015-A series, and Aquadrive propeller shafts with rubber bearings.
This combination ensures the highest level of performance, reliability, and fuel efficiency.
Three power options are available:
All engine options are fully loaded, meaning they can operate at full capacity 100% of the time. This, combined with the engines’ high power reserves, ensures quiet and comfortable operation. The narrow power band and limited speed range allow for optimal propeller matching, resulting in improved fuel efficiency and increased range.
Each engine is mounted on soft mounts to minimize vibrations transmitted to the hull. Additionally, the main structural beams in the engine room are solid to further dampen any resonances. The engine room is also isolated with 100mm of acoustic insulation on all sides, and the master stateroom is separated by a double bulkhead with an additional 100mm of acoustic insulation, making the yacht exceptionally quiet.
Control and monitoring
The propulsion system is controlled by a state-of-the-art EMERSON MAREX OS commercial-grade control system with dual redundant computers. This system is fully integrated with the propulsion system and is supplied as a complete package from MAN, including the engine, transmission, and controls.
SHIPYARD LOCATION
Twarda 6A
80-871 Gdańsk
CONTACT
office@cormorantyachts.com
All rights reserved. © 2021, Cormorant Yachts
design: Hajduk Studio