• 2019 February 8 15:18

    Naval Group and Centrale Nantes print the world's first hollow propeller blade

    Naval Group and Centrale Nantes have printed the first demonstrator of hollow propeller blades by metal additive manufacturing as part of the European H2020 project, RAMSSES. Funded by the European Commission, this collaborative programme aims to reduce the environmental impact of ships. Naval Group and Centrale Nantes are taking the lead within this project on the production of innovative propeller demonstrators to improve the operational capabilities of ships.

    In order to improve vessel propulsion, Naval Group and Centrale Nantes are using additive manufacturing to design large parts (propellers of 6 metres in diameter), which could not be produced thus far using traditional manufacturing technologies. Implementing the WAAM (Wire Arc for Additive Manufacturing) process, allows for printing of large parts and paves the way for the production of propellers with more complex geometry.

    Substantial industria gains
    The one-third scale hollow blade demonstrator, representative of a container ship propeller, was printed in stainless steel in less than one hundred hours, weighing in at about 300 kg. The teams’ sheer technical prowess means that weight gains of over 40% will be achievable compared to conventional processes.

    Significant operational gains
    Sirehna, a Centrale Nantes spin-off and subsidiary of Naval Group, is piloting the blade design in order to improve propeller energy efficiency and reduce their environmental impact. Sirehna’s work has led to an overall optimization of blades in terms of efficiency and endurance, but also a significant reduction in radiated noise and vibrations.

    About Cenrtrale Nantes
    Founded in 1919, Centrale Nantes is a French engineering school and member of the Ecoles Centrale Group. Its undergraduate, Master and PhD programmes are based on the latest scientific and technological developments and the best management practices. At Centrale Nantes, research and training are organised into three key areas for growth and innovation: manufacturing, energy transition and healthcare. Cenrale Nantes promotes its teaching and research capabilities at international level through around 100 partnership with prestigious universities and schools worldwide.

    About Naval Group
    Naval Group is a European leader in naval defence and an international high-tech company. The Group offers a wide range of marine renewable energy solutions. The Group has 13,429 employees and its revenue was EUR 3.7 billion (as of 2017).




2020 September 26

15:52 Port Freeport enters partnership with CEMEX Servicios Logisticos and Union Pacific Railroad
14:32 Coast Guard rescue two mariners from disabled catamaran near Oahu
13:43 NAT orders two -2- Suezmax newbuildings in South Korea
12:38 JAXPORT CEO Green named one of Florida’s top business leaders for third year in a row
12:06 Northwest to Midwest: New rail service builds on NWSA’s intermodal growth
11:02 IUMI: Loss prevention remains a vital element in ensuring the insurability of maritime risk
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2020 September 25

18:07 Tripartite agreement signed on establishing the FSRU terminal in the Bay of Gdansk
17:55 Baltic Fuel Company shipped first batch of bitumen
17:39 Scorpio Bulkers announces purchase of shares by Scorpio Services
17:34 Vessel “Razul Rza” sent to outer waters after the repair works
17:12 Metal Shark debuts 48-meter catamaran expedition vessel and introduces "Metal Shark Yachts" portfolio
16:51 Ningbo Containerized Freight Index rises significantly in September
16:19 OOCL's service update for Trans-Pacific trade
16:16 Representative office of Marinet opened in China
15:27 GTT signs a contract with the U.S. Dep't of Defense for the Red Hill Bulk Fuel Storage Facility
14:59 RFC held the second stage of the ecological marathon
14:31 Bunker prices are flat in the Port of Saint-Petersburg, Russia (graph)
14:05 Zvezda shipyard to build 10 gas tankers for Arctic LNG 2
13:42 Wärtsilä solutions meet challenging needs of Canadian Coast Guard vessel
13:18 Nuclear-powered container carrier Sevmorput delivered Kamchatka fish to Saint-Petersburg
12:56 Competition for construction of two scientific research ships for Russian Federal Fisheries Agency to be announced in October
12:34 Royal Niestern Sander orders SCHOTTEL thrusters for world’s first shallow-draught ice-breaking W2W vessel
12:11 VEB.RF starts financing construction of ten gas tankers for Arctic LNG 2 project
11:29 LR awards Samsung Heavy Industries AiP for its ammonia-fuelled tanker
10:37 British Ports Association sets out spending review priorities
10:29 New state programme on Arctic development in 2021-2024 drafted by Russia’s ad hoc Ministry
09:53 Debt service guarantees on Yamal LNG removed from NOVATEK
09:30 Oil prices rise in hope of demand
09:12 Baltic Dry Index as of September 24
09:11 MABUX: Bunker market this morning, Sept 25

2020 September 24

18:37 Kongsberg Digital develops cloud-based simulators for maritime industry, with funds from Innovation Norway
18:07 Wärtsilä ranked first in UN challenge to fight climate change with big data
17:45 Alco Bio Fuel, Messer Benelux and IJsfabriek Strombeek once again invest in recycling CO2 in North Sea Port
17:20 World’s first subsea compression system passes five years in operation
17:12 Esben Poulsson reappointed as ICS Chairman for a new term
16:48 Okskaya Shipyard launches first multipurpose dry cargo carrier of Project RSD59 for Astrol
16:24 Severnaya Verf starts cutting steel for seventh trawler of Project 170701 for NOREBO Group
15:50 ASCO's vessel “Razul Rza” sent to outer waters after repairs
15:26 Russian Direct Investment Fund (RDIF) to invest in Sovcomflot, says RDIF CEO
15:02 Diana Shipping announces the sale of a Capesize Dry bulk vessel
14:39 Russian Railways launches regular multimodal service from China to Europe via the ports of Kaliningrad and Hamburg
14:17 MABUX releases its weekly review of bunker market
14:02 Fincantieri starts dry dock works for experimental vessel Zeus
13:40 Freeport of Riga Authority signs Declaration of Cooperation with Port of Shenzhen
13:21 IMO celebrates World Maritime Day 2020
13:08 Total and MOL officially name the world’s largest LNG bunker vessel
12:48 Bunker prices decrease in the Far East ports of Russia (graph)
12:25 ZIM launches new China-Australia Express Line
12:11 Inmarsat Fleet Lte service coverage extended to Gulf of Mexico following successful trials with V.Ships Offshore
11:32 Ships of RF Navy’s Black Sea Fleet take part in "Kavkaz-2020" maneuvers
11:14 Port of Trelleborg offers their shipping customers reliable and fast internet with Nowhere Networks
11:13 "Tatarstan" missile ship of RF Navy’s Caspian Flotilla involved in "Kavkaz-2020" maneuvers
10:09 CTI-Maritec receives DNV GL approval for ballast water testing
09:57 Muuga freight station of Rail Baltica is to be designed by SWECO Projekt AS
09:36 MPC Container Ships ASA announces appointment of new CFO
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09:11 Baltic Dry Index as of September 23
08:40 MABUX: Bunker market this morning, Sept 24

2020 September 23

18:15 HMM opens Fleet Control Centre