Amels Custom 429

The Amels Custom 429 refers to the large custom yacht known as MONTKAJ, later renamed Atlantis. Built by Amels in the Netherlands and delivered in 1995, the yacht was originally 75 meters and was later extended to about 78 meters. It was one of the largest yachts built in the Netherlands at the time.

Designed by Terence Disdale, the yacht combines a displacement hull, extensive interior volume, and long-range cruising capability. Its classic superyacht profile and large accommodation capacity make it more focused on private luxury cruising and extended voyages than high-speed performance.

Is the Amels Custom 429 for Sale?

The Amels Custom 429 is not a conventional production yacht offered from inventory. The vessel currently known as Atlantis has reportedly changed ownership in 2026, although no official sale announcement has been made. Therefore, its current brokerage availability should be confirmed directly with a specialist superyacht broker.

Because of its age and custom construction, buyers should focus on the yacht's ownership history, refit records, classification status, and technical condition. A custom yacht of this scale is generally evaluated individually rather than compared directly with newer production models.

Amels Custom 429 Price

There is no reliable current public asking price for the Amels Custom 429. Its market value would depend on the current condition, refit history, equipment, ownership history, and technical upgrades. Public sources indicate that the yacht has recently undergone ownership-related changes, but do not provide a verified asking price.

For a yacht approaching 80 meters, buyers should also consider substantial annual costs for crew, fuel, insurance, maintenance, marina fees, classification, and future refits. The total ownership budget can be significant even when the purchase price is attractive compared with a new custom superyacht.

Performance and Propulsion

The Amels Custom 429 uses a displacement steel hull and twin Caterpillar diesel engines. Current published specifications list two Caterpillar 3516 DITA engines producing approximately 2,490 hp each, with a cruising speed of around 15 knots and a maximum speed of approximately 18 knots.

The yacht is designed primarily for reliable long-distance cruising rather than outright speed. Its substantial fuel capacity, displacement hull, and twin-screw propulsion provide the stability and endurance expected from a large ocean-going superyacht.

Exterior Design and Construction

The exterior and interior design of the Amels Custom 429 were created by Terence Disdale, giving the yacht a classic and understated superyacht appearance. Its large hull, high-sided profile, teak decks, and traditional proportions reflect the design approach of the 1990s.

The yacht was built with a steel hull and aluminum superstructure, providing structural strength while reducing weight above the waterline. After its original 75-meter construction, the yacht was extended by approximately three meters, resulting in the current length of about 78.05 meters.

Interior and Accommodation

The interior of the Amels Custom 429 was also designed by Terence Disdale, with an emphasis on privacy, spacious living areas, and classic luxury. Public information about the interior is relatively limited, reflecting the yacht's private operating history.

Current specifications indicate accommodation for up to 24 guests, with approximately 22 crew members supporting onboard operations. The yacht's large interior volume and multiple staterooms make it well suited to extended family cruising and private entertaining.

What to Check Before Buying an Amels Custom 429

Before purchasing an Amels Custom 429, buyers should conduct a comprehensive survey covering the steel hull, aluminum superstructure, engines, generators, fuel systems, electrical equipment, HVAC, stabilizers, and navigation systems. Its age makes the condition and replacement history of major systems particularly important.

Buyers should also review classification documents, maintenance records, refit history, and any modifications made during the yacht's life. With a vessel of this size, future refit requirements can have a major impact on ownership costs. A detailed technical survey and professional valuation are essential before proceeding with any transaction.