Boatique | Koopmans Welvaren II
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Boat name
Make and type
Dimensions LxWxH
Year of construction
Type of project
Motorisation
Battery pack
Charger
Monitoring
Integration
5kW
2W
13 kW
The Pon Center – Koopmans Welvaren II project involves the complete conversion of an existing Harding lifeboat into an electrically powered representative launch. The project was carried out for Boatique, with PON Nederland as the end user. The starting point was an empty hull, with both the technical systems and the entire interior being rebuilt from scratch. The launch is used for client engagement and representative purposes. This places specific demands on reliability, noise levels and the standard of finish. For this project, a fully emission-free propulsion system was chosen, combined with a robust energy supply and a sustainable superstructure.
The project is based on the conversion of the original lifeboat hull. The hull has been completely sanded down and refinished to create a solid foundation for further construction. The interior has been built from scratch using a combination of hardwood and waterproof laminated plywood. All structural components were then laminated with fibreglass and synthetic resin. This approach results in a rigid, low-maintenance and durable structure. In the forepeak, a finished space has been created with integrated lighting, a fridge and sanitary facilities. This layout creates a functional and comfortable environment suitable for representative use.
A Vetus E-Line electric motor with a rated power of 11 kW and a maximum power of 13.6 kW has been selected for propulsion. The motor is liquid-cooled and utilises fin cooling, ensuring stable thermal management under varying load conditions. This configuration contributes to quiet and low-vibration cruising. In combination with a newly fitted propeller and hydraulic steering, the handling is predictable and precise. The choice of this configuration is tailored to the boat’s usage profile, where low speeds, manoeuvrability and comfort are key priorities.
The power system consists of a lead-acid traction battery pack with a capacity of 690 Ah (C5), providing a net energy capacity of approximately 23 kWh. This type of battery was chosen for its robustness and reliability in this specific application. The power supply is supported by a Victron Multiplus II charger/inverter and an Ekrano monitoring and control system. This combination makes it possible to efficiently manage both shore power usage and on-board consumption. The installation has a modular design on the DC side, ensuring that maintenance and any future expansions remain manageable.
Various electrical appliances are integrated on board, including a fridge, courtesy lights and interior lighting in the forward cabin. All systems are connected within a clear and logically structured electrical installation. The system can be monitored and controlled remotely via the Victron VRM platform. This provides insight into energy consumption, state of charge and system status. For the end user, this means a high degree of control and transparency, without compromising on simplicity on board.
In addition to the technical fit-out, great attention has been paid to the finish and detailing of the vessel. The sloop is fitted with a custom helm station, a new hydraulic steering system and a bespoke rubbing strake. The finish comprises a custom paint job and matching decals, tailored to the user’s identity. The project thus comprises a complete refit, in which both technical and aesthetic aspects have been addressed comprehensively. The result is a quiet, emission-free and prestigious vessel suitable for intensive use in a professional environment.