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PHI’s narrow and fuel-efficient hull – based on the exterior design of Cor D. Rover, interior by Lawson Robb, and naval architecture by Van Oossanen Naval Architects – was engineered and constructed in the Royal Huisman’s Shipbuilding Hall 1 and was turned on its keel for completion late last year. PHI is now in the shipyard’s largest building facility Shipbuilding Hall 2. PHI’s superstructure was well-prepared and detailed by all main engineering departments of the shipyard, but its production was outsourced. Royal Huisman works in close collaboration with selected and highly qualified co-makers for new build (and Huisfit) projects. These partnering companies work closely together with Royal Huisman’s in-house team.


Relating to the ”sectio divina” or the Golden Ratio, PHI is the formula that governs the continuation of dimensions and shapes in natural proportions throughout the design. PHI’s creation was the result of many in-depth conversations over a period of years, between the experienced Owner and Cor D. Rover. The especially developed Fast Displacement XL ® hull form from Van Oossanen allows this yacht to 180ft+/55m+ and still remain under the 500 GT mark.

Basic Specs 

Type: “Fast Displacement XL ® by Van Oossanen“motor yacht
Exterior design: Cor D. Rover
Interior design: Lawson Robb
Naval architecture: Van Oossanen Naval Architects
Project management / Owner’s representative: Guy Booth
Builder: Royal Huisman
Length overall: 180ft+ ( 55m) +55m+
Construction: Aluminum
Gross tonnage: Below 500 GT
Year of delivery: 2021