Japec Jakopin

Jakopin was born in 1951 in Brežice, Slovenia. The family lived in the nearby village of Leskovec pri Krškem.[3]

Japec began diving at the age of six and learned to sail by the age of 13.[4] After graduating from the Medical school at the University of Ljubljana in 1974 he pursued an academic career at that school's Institute of Physiology and at the University Medical Centre, Department of Intensive Internal Medicine. In 1977 he obtained a master's degree in cardiology, of problems connected to arrhythmia, also during freediving, in 1980 a PhD and in 1981 the title academic specialist in cardiology.[5] In 1983 he resigned from his academic (and medical) career because of political issues.[4]

During his academic years Jakopin spent his weekends in the Croatian seaside town of Punat building do-it-yourself boats, and later learned the charter yacht business.[4] After leaving the medical profession in 1983 Japec, together with his younger brother Jernej, founded J&J Design studio, for production yacht design.[2][6] In 1983 they designed the Elan 31 sailing boat for the Elan sporting goods factory of Begunje, Slovenia, followed by Elan 33. Between 1983 and 1987 Elan sold 940 units of the Elan 31, Elan 33 and Elan 43, increasing its marine sales from DEM 2 million to DEM 32 million.[4] In 1987, Japec took a marketing and sales manager job at the French sailboat and powerboat builder Jeanneau where he stayed until 1990. In the meantime J&J Design continued designing boats for Jeanneau and several other European boatyards.[4]

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.[2][7] The list of clients included Bavaria, Beneteau and Jeanneau.[2] 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.[7]

Shipman 80 carbon yacht sailing in apparent wind

Seaway produced a limited number of high-class yachts and powerboats, the Shipman carbon sailboat line from 2002 and Skagen powerboat line from 2004.[2][6]

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,[8] the 33 feet (10 m) long Greenline Hybrid 33 (GH 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.[9] It sold 400 units by 2015, claimed to be the best-selling 10 m boat in 2010 and 2011,[10][11] and was followed by larger models, GL 40 in 2011, Greenline Ocean Class 70 in 2012 and GL 48 in 2014.[12][13]

GH 33, stern view with photovoltaic cells on the roof

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.[14][15]

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.[16]

In the meantime Jakopin brothers reestablished J&J Design as an independent company[17][18] while the boatbuilding part of Seaway (Greenline and Shipman families) was taken over by SVP Yachts (Vladimir Zinchenko).[19][20][21][22] The renewed venture continued to provide design as well as boat engineering and production process engineering for vessels from 20 to 80 feet, to major volume boatbuilders in the power and sailing area, including the Greenline builder SVP Yachts.[23] Since 1983 J&J Design produced over 300 designs from which 60.000 boats were built, by 63 boatbuilders in 26 countries. They won over 110 Boat of the Year, Design or Environmental awards.[24]

Jeranko, Artnik, Jakopin in Kaş, 2021

Jakopin was engaged in promoting new ideas in naval design, especially in the area of hybrid boat propulsion and environment friendly technologies, through lectures,[25][26] public presentations[27][28] and work in professional associations such as the Slovenian Academy of Engineering.[29] In October 2021 he won three gold medals in the freediving world championship in Kaş, Turkey in the category over 70 years: in constant weight monofin dive, in free immersion and in constant weight bifin dive. As of 2021 Jakopin held three world records in the above category, in free immersion, bifin and monofin classes.[30]

At the Freediving Indoor World Championship 2022, in June in Belgrade, Serbia he repeated the achievement from Kaş in Masters 70+ category, in Bifins (164 m), Monofin (186 m) and Static apnea (7 minutes 6 seconds) disciplines. In 2022 these results were the world records for the category.[31] In Monofin and Static apnea they were also the best for all groups over 50 years of age.[32][33][34]

During the CMAS Finswimming World Masters Championship on June 25 and 26, 2023 in Cairo, Egypt, Jakopin won four gold medals in 70-74 age group: 50 meter surface swimming with monofin (SF), 50 and 100 meter bi-fins (BF), and 50 meter apnoea with monofin (AP).[35][36][37] The results achieved in 50 m BF (27.15 s), 100 m BF (1 m 2.78 s) and 50 m AP (21.70 s) were world records for the age group.[38] Also in 2023, at the CMAS 6th Freediving Outdoor World Cup from October 7th to 15th in Kalamata, Greece, Jakopin achieved two new world records in the Masters 70+ age group (M5) : constant weight bifin dive (76 m), and constant weight monofin dive (75 m).[39][40]

• J&J Design website Archived 2021-02-27 at the Wayback Machine
• Greenline Hybrid boat site
• Shipman sailing yacht site Archived 2021-03-23 at the Wayback Machine