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Janssen & Renkhoff – Fertigung

New yacht builds, refits and restorations using PrePreg technology and teak planked decks in Kappeln

Janssen & Renkhoff Logo

Yachtbau Janssen & Renkhoff

Kappeln (DE)New on Amplifa

over 30 yearsExperience in yacht building
KappelnLocation on the Schlei

About Yachtbau Janssen & Renkhoff

Yachtbau Janssen & Renkhoff is a boatbuilding shipyard in Kappeln on the Schlei. For over 30 years, the company has stood for innovation in yacht building, realising new builds, refits, damage repairs and the sustainable restoration of old boatbuilding treasures. The services offered also include painting with alternative paint systems, optimisation recommendations for modern yacht handling as well as planked deck work and planked deck refurbishment in teak. Sprint® is among the construction methods used, a PrePreg technology for composite constructions. Projects are discussed intensively with clients, thought through and executed with master craftsmanship; the shipyard places great importance on staying on budget and schedule. The shipyard hall is located on the premises of Ancker Yachting in Kappeln.

Site
Kappeln
Processes
Sprint® (PrePreg technology), Painting / alternative paint systems, New builds (yacht/boat building), Refit, Damage repairs (repair), Optimisation, Planked deck / planked deck refurbishment, Sustainable restoration of old boatbuilding treasures
Materials
PrePreg (Sprint®), Teak (planked deck), Sprint® (PrePreg technology), Alternative paint systems, Mahogany (interior fit-out)
Certificates
Member of DBSV
Industries
Yacht building, Boat building
  1. 01

    Consultation and project meeting

  2. 02

    Design/engineering or damage analysis

  3. 03

    Assembly or repair (PrePreg/composite, teak planked deck)

  4. 04

    Painting

  5. 05

    Delivery

Materials & Processes

PrePreg

Sprint® (PrePreg technology)

PrePreg composite technology for lightweight construction and performance in new yacht builds.

Teak

Teak (planked deck)

Teak is used for planked decks and their refurbishment on yacht decks.

Lack

Alternative paint systems

Alternative paint systems are used for painting in yacht building.

Mahagoni

Mahogany (interior fit-out)

Mahogany is used for interior fit-out in modern classics.

Location

Standort Kappeln

Kappeln

DE

Workshop/Operations

Materials
PrePreg, Teak

Components & Projects

Structural damage, repaired
Structural damage, repairedComposite repair · yacht building
Teak planked deck, refurbished
Teak planked deck, refurbishedPlanked deck refurbishment · yacht building
Mahogany fit-out
Mahogany fit-outInterior fit-out · classics

Inside the production

Performance cruiser in classic style: SY "Loony"
Performance cruiser in classic style: SY "Loony"
Refit of the 50-year-old De Dood classic SY Oromocto
Refit of the 50-year-old De Dood classic SY Oromocto
Refit project 2025/26
Refit project 2025/26

Industries

Yacht buildingBoat building

Processes & technical limits

ProcessesToleranceMax. partWeightLot sizeMaterials
Sprint® (PrePreg technology)Plastics––––PrePreg, GRP/composite materials
Painting / alternative paint systemsSurface–––––
New builds (yacht/boat building)Assembly–––––
RefitAssembly–––––
Damage repairs (repair)Assembly–––––
OptimisationEngineering–––––
Planked deck / planked deck refurbishmentAssembly––––Teak
Sustainable restoration of old boatbuilding treasuresAssembly–––––

Additional services

New buildsRefitDamage repairsOptimisationPlanked deckPlanked deck refurbishmentPaintingSprint® (PrePreg technology)Restoration of old boatbuilding treasures

Quality

The work is discussed intensively with clients, thought through and executed with master craftsmanship; great importance is placed on staying on budget and schedule.

EvidenceKappeln
Member of DBSV

Milestones in Boatbuilding

  1. For over 30 years, the company has stood for innovation in yacht building.

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