About

Our Background & Approach

Specialists in Kamewa Yacht Propulsion

G-jet specializes in the maintenance and technical support of Kamewa (Kongsberg Maritime) waterjet propulsion systems for the yacht sector. The company was founded by Giulio Folena and is owned by V610 AG (Switzerland), ensuring operational stability and a long-term commitment to service quality.

We operate as:
‍- Authorized Dealer in the Mediterranean
- Official Service Partner in the United States
‍Our team combines more than twenty years of mechanical and electronic propulsion experience, supported by manufacturer-certified training and standardized maintenance procedures. This enables us to intervene with precision both in shipyards and on board, ensuring propulsion reliability and lifecycle performance.

Our work is based on:
- traceable maintenance workflow
- clear and direct communication with captains and shipyards
- predictable timelines and service consistency
- long-term operational support and spare parts continuity
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‍We understand that reliability at sea is the result of preparation, correct maintenance planning and accurate execution. For this reason, we operate with a technical mindset and a partnership approach, supporting each vessel and its crew throughout the season.Whether managing scheduled maintenance, troubleshooting, refit support or component overhaul, we focus on safeguarding propulsion integrity and ensuring stable performance over time.

What we are best at

Our Services

Scheduled Mechanical and Electronic Maintenance

We execute planned maintenance programs for Kamewa (Kongsberg Maritime) waterjet propulsion systems, ensuring predictable performance and long-term reliability.
Our approach includes systematic inspections, condition monitoring, and servicing of both mechanical assemblies and electronic control systems. This reduces unplanned downtime and maintains optimal propulsion efficiency throughout the season.

Rapid On-Site Technical Assistance

During the season, we provide rapid-response technical assistance to resolve unexpected propulsion issues. Our team is trained to diagnose and intervene directly on board or in shipyards, minimizing downtime and restoring operational capability as quickly as possible.

Spare Parts Supply

We maintain a stock of original Kamewa (Kongsberg Maritime) spare parts to ensure fast availability and reduce lead times during maintenance and service operations. Our supply capability supports both planned interventions and urgent replacements, helping to maintain propulsion system uptime and operational continuity.

Engine/Gearbox Readings and Alignments

We carry out precise engine and gearbox alignment using certified digital SKF measurement tools. Correct alignment reduces vibration, minimizes bearing and coupling wear, and ensures efficient power transmission. Each intervention is documented to provide alignment traceability and long-term maintenance reference.

Silent Block Replacement

We replace and calibrate silent blocks to restore proper alignment and vibration damping within the propulsion system. Correct silent block condition reduces mechanical stress, prevents premature wear of rotating components, and improves onboard comfort during operation.

Overhaul of Traditional Propulsion Systems

We perform complete removal, overhaul, and reinstallation of traditional shaft-line propulsion systems. This includes inspection, refurbishment, and recalibration of key components to restore mechanical integrity, reduce vibration, and ensure reliable performance over time.