‘Inveni Portum, Spes et Fortuna valete’

Inveni 18M

The aluminium Inveni combines elements of the famous Dutch Lemsteraken sailing vessels with innovative luxury motor yacht design.

The Inveni is the kind of vessel on which its owners can travel from the Russian to the Mediterranean Sea. The vertical bow gives the Inveni a classic appearance, which is what designer Cor D. Rover aimed for.

The timeless design of the Inveni, is combined with the latest in innovations from the super yachting world.

The Hull Vane and the Fast Displacement Hull Form (FDHF), both designed by Van Oossanen Naval Architects and never used in a single vessel of this size, work together to make the yacht generate less waves, have a longer range at cruise speed and a lower fuel consumption.

On top of this, the Seakeeper technology eliminates boat roll significantly.



Sichterman not only sets itself apart with its exterior aesthetics and technological innovations. With the mounting cost of furnishing and styling luxury yachts,
we decided to disrupt the interior process as well.

With our innovative interior program, we’ve made it possible to build yachts
up to 6 months faster at a set price.

Choose your

interior style

The following styles can be implemented in the Sichterman fleet:


Elegant lines flow into dynamic details, borrowed from the world of classy sports cars.

The interior presents a fresh and inviting Mediterranean style, characterized by simple and romantic aesthetics of Southern European countries.


An exciting fusion of glamour and beauty, artistically decorated to create an exclusive experience. The perfect style for a home away from home.

It provides a balance between classic and contemporary design. This results in a warm and delicate interior style.


A warm, harmonious and inviting style, which allows you to feel at home. This interior variation uses simple forms and strong lines that are equal parts modern and cozy.

The classic combinations are elevated with texture variations, to create a narrative that immediately catches the viewer’s attention.

Within these styles, the client can choose from a selection of fabrics and materials, to create a unique and personal yacht.
This ensures that every yacht caters to the needs and wishes of its owners.


Sichterman Inveni 18M/58FT

Designer: Cor D. Rover
Naval Architect: Van Oossanen Naval Architecture
Builder: Workumer Jacht Service

Hull TypeFast Displacement Hull Form (FDHF)
Hull/Super Structure MaterialFull aluminium
Class/FlagISO Category A
Length Over-All18.10 m
Length Waterline16.38 m
Length Hull16.63 m
Maximum Beam4.98 m
Weight (Half load)32.9 T
Fuel Capacity3450 liters
Fresh Water Capacity1000 liters
Black Water Capacity280 liters
Main Engines2x Cummins QSB6.7
PropulsionTwin Propeller, Diesel Driven
Generator1x 13 kW Kohler
Cruise speed10 knots
Maximum Speed21.9 knots
Range @Max320 nm
Roll StabilisationGyroscope Seakeeper 16
TenderWilliams Turbojet 285
Special FeaturesHull Vane® fitted