Seven Marine
| Seven Marine | |
|---|---|
| legal form | Limited Liability Company |
| founding | 2010 |
| Seat |
Germantown, Wisconsin United States
|
| management | Rick Davis |
| Branch | Ship engineering drive technology |
| Website | www.seven-marine.com |
Seven Marine is an American manufacturer of high-performance outboard motors for seaworthy motor boats.
Company history
The company was founded in 2010 by Rick Davis, who previously held senior positions with Mercury Marine for several years . Davis' objective was to develop and build the most powerful outboard motor in the world. Development began in August 2010 and in mid-February 2011 the concept was presented at the Miami International Boat Show in cooperation with the US boat manufacturer Intrepid Powerboats.
The "557" model, which is designed for boats with a minimum length of 27 feet (approx. 8 meters), was ready for series production in March 2012. The type designation refers to the output of 409 kW (557 PS ) on the propeller shaft.
In 2015, the company announced an upgraded version of the "557" engine called the "627".
On July 6, 2017 it was announced that Volvo-Penta will become the majority owner of Seven Marine.
The outboard motors that are now available are considered the most powerful representatives of their type worldwide:
- "557" with an output of 409 kW (557 PS )
- "577s" with an output of 430 kW (577 PS )
- "627sv" with an output of 468 kW (627 PS )
Seven Marine has offices in Florida , on the American east coast, on Sint Maarten and in Abu Dhabi .
technology
As a drive unit of Seven-marine outboard engines comes V-eight-cylinder - Small block engine of the type gene IV LS9 of General Motors with a displacement of 6.2 liters and supercharging is used, which - in contrast to the conventional design with outboard motors - horizontally above of the shaft is installed.
In order to be able to use the engine for use in shipping, the engine cooling and exhaust system had to be largely redeveloped. The cooling system consists of a primary and a secondary circuit as well as a heat exchanger. This prevents salty water from entering the cooling ducts of the engine block. In order to keep the dimensions of the heat exchanger as small as possible, the engine itself is cooled with ethylene glycol . The exhaust system ends in two exposed tailpipes above the waterline. Power is transmitted via an electronically controlled five-disc clutch that runs in an oil bath and was developed by ZF Friedrichshafen .
The engines can be operated with different propeller configurations as a single or multi-engine system. In order to reduce the wheel effect in a single-engine system, the units have also been offered with counter-rotating 5-blade coaxial propellers under the additional designation "CR" ("contra-rotating") since 2014. With a single propeller and a shaft length of 508 mm (20 inches), the outboard weighs 497 kg.
Individual evidence
- ^ Seven Marine LLC: About Us. (No longer available online.) Archived from the original on July 12, 2015 ; Retrieved July 12, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Seven Marine LLC: February 18, 2011: Seven Marine Powers up Boating Industry with Debut of 557 HP Outboard Engine at Miami International. (No longer available online.) Archived from the original on July 13, 2015 ; Retrieved July 12, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- Jump up ↑ Lenny Rudow, YachtWorld.com: Most Powerful Outboard Engine Ever: Seven Marine 627. Retrieved July 12, 2015 .
- ↑ Volvo Penta becomes majority owner of innovative outboard motor manufacturer Seven Marine . ( volvopenta.com [accessed January 29, 2018]).
- ^ Seven Marine LLC: Specs. (No longer available online.) Archived from the original on July 13, 2015 ; Retrieved July 12, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ Seven Marine LLC: Technology. Retrieved July 12, 2015 .
- ↑ Seven Marine LLC: February 13, 2014: Seven Marine Debuts 557CR and 557GT at the 2014 Miami International Boat Show. (No longer available online.) Archived from the original on July 12, 2015 ; Retrieved July 12, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
