In 1989 the two brothers founded Seaway, also in Slovenia, to expand J&J Design activities to engineering, tooling and prototyping for boat manufacturers.

By 2000 Seaway became the only independent company outside major yacht builders that could engage in the entire development process - from design to prototype and final moulds, and its revenue grew to 6.6 million euros.
The list of clients included Bavaria, Beneteau and Jeanneau.

In 2001 KD Group, the largest Slovenian private finance group, invested 3 million euros in the company, for a 50% share and a request for change of strategy to own boat production.
Investment enabled the purchase of a robot for precise prototype and mould production, required by Seaway's customers and acquisition of new, larger premises for installation of the new tool.

Seaway produced a limited number of high-class yachts and powerboats, the Shipman carbon sailboat line from 2002 and Skagen powerboat line from 2004.

The Shipman 50 and Shipman 63 won the 2003 and 2006 European Boat of the Year Award at the Boot Düsseldorf boat show.

In 2009 a hybrid powerboat with diesel, electric and solar propulsion was developed and produced, the 33 feet (10 m) long Greenline Hybrid 33.
It also won the 2010 European Boat of the Year Award at the Boot Düsseldorf boat show.
Its main appeal besides the hybrid propulsion with zero-emission and no-noise sailing was the constant availability of 110/230 VAC power for appliances.
It sold 400 units by 2015, claimed to be the best-selling 10 m boat in 2010 and 2011, and was followed by larger models, GL 40 in 2011, Greenline Ocean Class 70 in 2012 and GL 48 in 2014.

Hybrid technology was also applied to a Seaway's sailing boat, to the Shipman 59 Carbon, designed together with Doug Peterson and the French naval architect Guillaume Verdier.

In 2014 Seaway was in no shortage of orders for boats, but the enduring credit crunch after the 2008 crisis crippled further production and in 2015 both divisions of the company went out of business.
In 1989 the two brothers founded Seaway, also in Slovenia, to expand J&J Design activities to engineering, tooling and prototyping for boat manufacturers.
By 2000 Seaway became the only independent company outside major yacht builders that could engage in the entire development process - from design to prototype and final moulds, and its revenue grew to 6.6 million euros. The list of clients included Bavaria, Beneteau and Jeanneau.
In 2001 KD Group, the largest Slovenian private finance group, invested 3 million euros in the company, for a 50% share and a request for change of strategy to own boat production. Investment enabled the purchase of a robot for precise prototype and mould production, required by Seaway's customers and acquisition of new, larger premises for installation of the new tool.
Seaway produced a limited number of high-class yachts and powerboats, the Shipman carbon sailboat line from 2002 and Skagen powerboat line from 2004.
The Shipman 50 and Shipman 63 won the 2003 and 2006 European Boat of the Year Award at the Boot Düsseldorf boat show.
In 2009 a hybrid powerboat with diesel, electric and solar propulsion was developed and produced, the 33 feet (10 m) long Greenline Hybrid 33. It also won the 2010 European Boat of the Year Award at the Boot Düsseldorf boat show. Its main appeal besides the hybrid propulsion with zero-emission and no-noise sailing was the constant availability of 110/230 VAC power for appliances. It sold 400 units by 2015, claimed to be the best-selling 10 m boat in 2010 and 2011, and was followed by larger models, GL 40 in 2011, Greenline Ocean Class 70 in 2012 and GL 48 in 2014.
Hybrid technology was also applied to a Seaway's sailing boat, to the Shipman 59 Carbon, designed together with Doug Peterson and the French naval architect Guillaume Verdier.
In 2014 Seaway was in no shortage of orders for boats, but the enduring credit crunch after the 2008 crisis crippled further production and in 2015 both divisions of the company went out of business.
Japec Jakopin