Modular RoRo deck

Modular decks for RoRo vessels (non-metallic)

Custom-made hull

Custom made hull for offshore vessel

Fully outfitted and modularised cabin

Multi material lightweight cabin for passenger ships

Panel system (bio-based and other)

Lightweight components for high loads and fire class

Composite block on steel deck

Composite superstructure module on steel deck for multi purpose vessels

Versatile walls

Integration of system for internal walls and superstructure
of cruise ships into shipyard processes

Lightweight rudder flap

Lightweight rudder flap

3D-printed propeller blade

Propeller blades by additive manufacturing

Panel system (truss structure)

Modular light system for less critical internal walls and superstructure

Aluminium composite panels

Lightweight aluminium and composite walls for work boats

High tensile steel decks

Lightweight decks using high tensile steel in cruise ships

Design details (high tensile steel)

Highly loaded structural details from high tensile steel
in passenger and research vessels

Patch repair - composite overlays

Composite overlay to repair and improve metallic and
non-metallic structures

RoRo deck

custom-made hull

cabin system

aluminium panels


versatile walls

rudder flap

propeller blade

truss structures

bio-based panels

steel decks

steel details

patch repair

Lightweight decks using high tensile steel in cruise ships

State of the Art

Weight saving through thinner structures or use of high tensile steel (HTS) is of increasing interest in modern cruise ships. Whilst feasibility has been shown in principle, previous research and industrial prototype applications have revealed that production processes have significant impact on the quality of joints and structural distortions, which can decrease the performance of thin structures. While low heat input welding for conventional steel has been developed, a lack of experience, quality assurance and confidence in the shipyard production processes does not allow for the extensive use of HTS in critical (load carrying) applications currently.


The feasibility of production of large steel sections using low material thicknesses and HTS will be demonstrated – including the process chain from butt and fillet welds in pre-manufacturing up to assembly joints in confined spaces or overhead conditions within and outside covered facilities. Process parameters and quality assurance procedures will be established under real-life conditions at real scale, providing the basis for approval and wider use of HTS thin sheet structures under full exploitation of their strength properties.


In global competition, process skills and quality become competitive advantages, not only in terms of cost, but also in producing products with new design features and reliable quality. The use of HTS with yield strengths of up to 690 MPa is expected to allow weight savings of 20% and above at high cost efficiency, leading to reduced fuel consumption and increased payload (and cabins). The processing of HTS in large structures under harsh environmental conditions is applicable not only to cruise ships, but also to other highly loaded structures such as cranes, bridges and offshore renewable energy devices.