Dam en take s lead in 3D

Mo Del Base D Class Appro Val

Classification society Bureau Verit as has successfully reviewed a 3D design of a 2500 m³ hopper dredger from Damen Shipyards, being a st ep t o granting it approval in principle. The pilot project for 3D modelbased class approval is meant t o pave the way t owards using three dimensional comput er designs as st andard procedure t o achieve class not ation for seagoing vessels.

Vessel steel hull Design evaluation based on 3D models in parallel to its classification review process has become possible thanks to the new data exchange format - OCX. The OCX is an open standard that facilitates data exchange of 3D ship models for class approval This Open Class 3D Exchange standard has been developed by a consor tium of software companies including NAPA and Aveva, together with classification societies including DNV, Bureau Veritas and Lloyds Register In close collaboration with Finnish software developer NAPA and Bureau Veritas, Damen has presented the three dimensional design of their TSHD 2500 (Trailing Suction Hopper Dredger with 2500 m³ hopper capacity) All the mission equipment as specified for a client had been integrated into this design Bureau Veritas assessed the steel hull structure to be strong enough and safe to SOLAS standards, with all of the heavy equipment operational

The OCX format has been available since 2022 First pilot projects for par tial designs were finished in November last year The project for the Damen Dredger with NAPA and Bureau Veritas is the first complete steel hull to achieve class approval by 3D design Damen intends to apply this approval process with more vessels, also in co-operation with class society DNV and others

Today’s best practice is 2D technical drawings remain an explicit requirement when naval architects and shipyards submit their hull designs to classification societies, to ensure they fulfill both Class and Statutor y requirements After the class society studies the drawings, sometimes changes are required The designers take the remarks from the drawings and apply them in the 3D model Then the process repeats Presenting the 3D models to classification societies saves a lot of time and present making mistakes Open data exchange standard facilitate exchange of 3D ship models for class approval

“Seeing the results of this first class approval for a vessel steel hull, we are cer tain that this is the way to go, ” Managing Director Kasia Romantowska from Damen Engineering Gdansk ensures “Development time for the steel construction will be shor ter thanks to class approval and us using 3D models only We have more control over the technical risks embedded into a prototype vessel design process It has been the first time that have we closed the 3D data exchange loop between par ties We expect to be able to save significant percent of design time when we integrate this way of working as a standard The big benefit is the enhanced project team collaboration within the same, fully digital, transparent daily work context, applicable for designers and approval engineer at the same time ” www damen com

Kasia Romantowska announces more demonstrator projects for 3D model based class approval. The co-operation with Bureau Veritas and NAPA is ver y much appreciated, she underlines.

Fu rthe r develo pm ents fo r Oceanbird

The Alfa Laval-Wallenius joint venture, Oceanbird has revealed plans t o inst all sails on board a pure car and truck carrier (PCTC) next year, plus a new PCTC, Orcelle Wind, is being designed with the sails and could be commissioned in four years ’ time

The first retrofit project will be carried out on board the Wallenius Wilhelmsen pure car and truck carrier, Tirranna, to coincide with the 7,620-CEU ship’s 2024 dr ydocking. A single sail will be installed for trials and the project will involve hull modifications and strength and stability tests

At a presentation yesterday, the company highlighted the 60,000 existing ships that are potential retrofit candidates Roro ’ s are a good star ting point because they have a clear deck and no visibility issues However, the company is hoping that the Tirranna project will provide valuable experience enabling retrofits to other ship types, including tankers, bulk carriers, and container ships

With potential fuel and emission savings of 7-10% on existing ships, the sails could provide a boost to ships’ carbon intensity per formance, the company noted, as the IMO’s carbon intensity indicator (CII) tightens over the second half of the decade

For purpose-designed new ships, however, the potential savings are far more dramatic The company has previously claimed possible fuel and emissions savings of up to 90%, enabling ships to have much smaller engines

The first sails are 40m high and 14m wide Consisting of highstrength steel and glass fibre composite, they can be lowered to meet air draft restrictions or tilted in heavy weather They can be used in winds of up to 40 knots, equivalent to the top end of Beaufor t Scale Force 8

Land-based sail prototypes will be tested later this year This will facilitate mechanical and operational refinements and provide an oppor tunity for crew training

Adaptable Vessel for Hire for Marine Support Services

Briggs Marine and ARB Wind secure contract with NnG for jacket dehumidification system

Briggs Marine, in conjunction with sist er company, ARB WIND, is embarking on its lat est of fshore wind project. The company has been awarded a contract t o ins t all, maint ain and f inall y decommission a t em porar y dehumidification syst em for 10 Transition Pieces (TPs) on the of fshore platforms t o control humidity levels until permanent power is inst alled.

Arran Bell, Managing Director of ARB WIND commented: “We are delighted to bring our inhouse knowledge and experience to the table to ensure the protection of the TPs from the Nor th Sea weather conditions

“As a business, we are committed to a preventative maintenance regime in all aspects of our work so this follows that same model

“By utilising sensors to control the humidity inside the transition pieces, the relative humidity will be maintained at an agreed level which should not only protect the condition of the equipment but provide a safer environment for people to work in ”

Managing Director of Briggs Marine, Collieson Briggs advised: “We are proud to be providing this additional ser vice to NnG Windfarm Our involvement in Offshore Wind is increasing and this is another ser vice that will add to our por tfolio, we are grateful to NnG for selecting us to deliver this work, and their continued commitment to suppor t local content.” www briggsmarine com

NnG is currently in the construction phase of the offshore wind farm. With the jackets now installed, the temporar y dehumidification system will be required until activation of the actual wind turbine generator (WTG) dehumidifiers. NnG, jointly owned by EDF Renewables and ESB, will supply enough low carbon electricity for around 375,000 homes and has a capacity of around 450 megawatts (MW) of low carbon energy. It will offset over 400,000 tonnes of CO2 emissions each year. The first turbines are planned to be operational in mid-2023, with completion of the entire wind farm scheduled for 2024.

Candela reveals world's longest-range electric boat with Polestar batteries and DC charging

With up t o 57 nm (65 US miles) of expect ed range and DC c harging, the foiling Candela C-8 ‘powered by Poles t ar ’ is designed t o upend the dominance of fossil fuel boats.

Electric boatmaker Candela has unveiled the first product emerging from the batter y collaboration with premium electric car brand Polestar announced in August 2022: Candela C-8 ‘powered by Polestar’, the longest-range electric boat to date

The Candela C-8 will use the same 69 kWh batter y pack and DC charging technology as the Polestar 2 and has an expected range of up to 57 nautical miles (65 US miles) on one charge at a cruising speed of 22 knots (25 mph) The range is two to three times longer than what conventional electric speedboats can achieve at high speed and compares favourably with how internal combustion engine powerboats are used

"This collaboration means that C-8 can travel to destinations previously only reachable by combustion engine boats The Candela C-8 powered by Polestar marks a significant breakthrough for electrification at sea", says Gustav Hasselskog, CEO and founder of boat maker Candela

Usage data from Europe’s premier boat-sharing ser vice Agapi, with fleets in several locations in Europe, from Helsinki to Mallorca, show that 95% of their members’ day excursions are less than 50 nautical miles, or well within the range of Candela C-8

The secret to the long range lies in Candela’s hydrofoil technology. Flying above the waves on computer-guided under water wings that greatly reduce water friction, the C-8 uses 80% less energy than conventional boats at high speed Its highly efficient pod motor, Candela C-POD, outputs 75 kW/100hp for takeoff Once foilborne, the C-8 flies efficiently, drawing only around 23 kW/30hp continuously from its Polestar batter y pack –whereas a similar-sized conventional boat would use around 120 kW/160hp

The Polestar collaboration also enables DC charging in Candela C-8, which opens up new routes and futureproofs the boat as DC charging networks are rolled out along coastlines

“With access to DC fast chargers, which now star t to pop up in several places around the globe, you can cover totally new routes with Candela C-8 You can go from Sweden to Finland in one day, or along the entire French Riviera in a few hours For a few euros/dollars’ wor th of electricity”, says Gustav Hasselskog

The supply of batter y and charging systems to a third par ty, a first for Polestar as an EV manufacturer, marks the star t of a broader intended par tnership between Polestar and Candela www candela com

“Sharing our know-how on batteries and vehicle engineering with Candela will help us reach our shared goal of transitioning to a future where all forms of transpor t are sustainable,” says Thomas Ingenlath, CEO Polestar.