Lady Petra

by Heesen Yachts with Omega Architects and Bannenberg & Rowell Design

Lady Petra is the eighth yacht in the 47-metre steel displacement series offered by Heesen Yachts with the option to customise just about everything apart from the basic naval architecture. When it comes to form and function, Lady Petra is unique and quite unlike the previous vessels launched by Heesen in this series.

However, one thing she does have in common with other Heesens is that Lady Petra has been built to the specific requirements of the vessel’s Owner. This Dutch shipyard began its philosophy of custom building on a series of platforms several years ago, and has kept faith with the concept due to the major technical advantages it offers. First and foremost is the benefit of always working on an engineering base that is a known quantity, making it possible to produce very accurate performance estimates. In addition, there is an obvious reduction in the time it takes to build each yacht, since the shipyard is operating on a base that it is familiar with. All of this creates major advantages for the shipyard and of course for the Owner, who gets to decide what the ship will be like down to the tiniest detail, both in the arrangement of the outdoor and interior spaces. Thanks to this strategy, Heesen can deliver a yacht like Lady Petra in less than 24 months. At first glance, Lady Petra’s stylistic features allow us to identify the Dutch shipyard as the builder; particularly the prow section, with a full beam main deck and bulwark typical of Heesen. However, in addition and perhaps most importantly, the less visible aspects also include features typical of the shipyard, which has always had a commitment to research and development into solutions to optimise efficiency. Here we need to start a new chapter, because having had the pleasure of visiting the company several times, particularly the technical department responsible for research and development, we have always been fascinated by the company’s commitment to this field. For a shipyard that has always focused on performance, this is of course key, especially when the fruits of its research have been hugely important, as is evident today. Analysis of all aspects involved in hydrodynamic efficiency on Lady Petra has led to solutions that mean this yacht is a highly efficient work of naval architecture. This translates into lower power requirements in order to reach the design speed, with a resulting reduction in consumption and increase in range, which in this case is over 4,000 miles. Moreover, Lady Petra has the greatest possible volume for a ship intended to come in below the 500 GT threshold. Now a word about the vessel’s unusual Owner, Mr Frans Heesen, the man who has been at the helm of the company that bears his name for over 35 years since he founded it in 1978. The first vessel he built at his shipyard for his family was My Petra in 2009, the sixth hull in the 4400 Class aluminium semi-displacement series. Mr Heesen explained that the reasons why he and his wife – the Lady Petra of the name – wanted to build a new ship were that after their enjoyable experience of My Petra with their family, he realised that as well as knowing how to build ships very well – and this is borne out by the facts – he also understood how to experience them with his family in the best possible way. Hence the desire to produce a bigger ship with solutions better suited to accommodate every member of his family, including three children, seven grandchildren and various relatives and friends. Mr and Mrs Heesen love family life and spending time together, but they know that to do this well you need to have functional, comfortable spaces for everyone. The first thing the family decided is that for their lifestyle the best solution was a displacement hull to maximise volume available. The choice of the 47-m platform was dictated by the huge flexibility of this ship design, especially when it comes to everything above the waterline. [...]

Lady Petra technical specifications

Hull typeTwin procelle, round bilge, displacement
Length over all46,70 m / 153’2’’ ft
Beam over all8,83 m / 29’0’’ ft
Draft2,85 m / 9’4’’ ft
Displacement (50% load) 410 tons
Maximum speed (50% load)15,5 knots
Range at 12 knots4.000 Nautical miles
Fuel capacity 60.000 litres / 15.875 US gallons
Fresh water20.000 litres / 5.280 US gallons
Main engines2 x MTU 8V 4000 M70
Maximum power2 x 1.160 kW
Gearbox2 x ZF 4661
Engine controlMTU Blue Vision
PropellersSchaffran five blade fixed pitch Ø 1.600 mm
Generators2 x Kilo-Pak
Bow thrusterZF Marine 1000, 90 kW, hydraulically driven
Steering systemSperry Marine Systems
StabilizersNaiad Dynamics, type 621
CabinsOwner’s stateroom
VIP cabin
two double cabins
two twin cabins
ClassificationLloyds ✠ 100A1 SSC Yacht ✠ LMC
Large Commercial Yacht Code LY2 / MCA
Naval architectsHeesen Yachts
Exterior StylingOmega Architects
Interior DesignerBannenberg & Rowell Design
ShipyardHeesen Yachts
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