• 2020 July 9 13:22

    MOL announces joint development of energy-saving rudder

    MOL Techno-Trade Co., Ltd., MOL, Japan Hamworthy Co., Ltd. and Akishima Laboratories Inc. are conducting research and development on the propeller-mounted energy-saving device called PBCF and the energy-saving rudder with bulb fins, MOL said in its release.

    In the development of energy-saving rudder with bulb fins, MOL has enhanced the energy-saving performance and improved horsepower by taking advantage of the steering effect of the rudder of JHC, a specialized manufacturer of high lift rudder such as schilling rudder. The features of the developed rudder are as follows.

     1) In order to recover the swirling flow of the propeller, the reaction shape is designed as a high thrust blade section and the rudder horn is also twisted and integrated so as to increase thrust due to the negative pressure on the rudder.

     2) By reducing the size of the end plate under the rudder, the resistance is reduced and the propeller swirl flow is also blocked.

     3) The large central bulb has a flat front surface to reduce the propeller inflow speed and improve propeller efficiency.

    MOL used JBC (Japan Bulk Carrier) hull, which is open to the public as a general large-sized hull and widely used in various research and development. Generally, it is difficult to improve the horsepower by 4% or more with a normal reaction rudder. However, with the developed rudder, CFD (Computational Fluid Dynamics) showed 5.7% improvement in horsepower and a self-propulsion test in a large towing tank confirmed 5.2% improvement.

    The developed rudder has been applied to the slender ship types as well, and an energy-saving effect of 4.4% has been confirmed by CFD. In the future, MOL plans to conduct a large towing tank test after performing optimization work.

    The pressure change (red to blue) on the rudder surface is caused by the rotation of the propeller. In other words, it flows in from the port side at the upper rudder and from the starboard side at the lower rudder.




2020 August 14

18:27 RS updates requirements for ship technical documentation
18:15 Boston Ship Repair secures Navy's $16,5M contract for T-AO 193
18:05 RS introduces Guidelines on Fatigue Assessment of Ships
17:46 Ukrainian port of Skadovsk opens grain season
17:23 Heerema's SSCV Sleipnir breaks own record with 10100 mT jacket lift
17:03 Diamond S Shipping Inc. reports 2Q 2020 results
16:59 NIBULON hits new records in 2020/21 marketing year
16:40 H1’2020 throughput of Taganrog Sea Commercial Port is flat Y-o-Y
16:18 Robert Socha joins Conrad Shipyard’s senior management team
15:54 Rosneft’s 1H 2020 hydrocarbon production fell by 7% YoY
15:35 Aker Carbon Capture AS and Aker Offshore Wind Holding AS – contemplated private placement and listing on Merkur Market
15:11 DOF Rederi AS sold vessels with YB 1983/2020
14:49 Port of LA to work with California manufacturers and technology association under new agreement
14:22 Transshipment of Angara launchpad components underway at Sovetskaya Gavan port
13:46 NCSP joins national project to improve workforce productivity
13:24 First of six new US Navy tugboats features integrated Furuno Marine Electronics
13:01 Port of Cardiff signs new long-term lease with Stone Supplies Ltd.
12:38 Rosneft reports H1 net loss of RUB 113 billion
12:10 Okskaya Shipyard lays down fifth multipurpose dry cargo carrier of Project RSD59 for Astrol
11:47 IMSC issues statement on the Incident with Motor Tanker Wila
11:29 Port of LA July volumes are strongest of 2020
10:53 First part of permanent layoff negotiations at Turku shipyard are ready
10:29 Krasnoye Sormovo lays down 23rd dry cargo carrier of Project RSD59
10:04 BlueWater Reporting issues alliance market share report
09:30 Crude oil prices start rising
09:12 MABUX: Bunker market this morning, Aug 14
09:07 Baltic Dry Index as of August 13

2020 August 13

20:58 Rosmorrechflot promotes Stanislav Uryupin to Port of Novorossiysk Harbourmaster
18:31 Glavgosexpertiza gives nod to Sovetskaya Gavan LPG terminal project
18:06 Global Industry Alliance issues Just-In-Time Arrival Guide
17:36 HMM Rotterdam en route to Rotterdam
17:18 Ust-Luga Multipurpose Reloading Complex half-year cargo volume down 9% year-on-year
17:06 The operational situation in the port of Beirut is back to normal
16:48 TCSP Group half-year throughput grows 11.4%
16:31 Kalmar service expertise to enhance safety, performance and productivity on WWO’s American routes from Manzanillo International Terminal in Panama
16:12 CMA CGM announces PSS from North Europe (except France) to Australia & New Zealand
15:26 Minister for Regional Growth and Local Government opens multi million pound bulks terminal at Teesport
15:21 St. Petersburg set to create infrastructure for all-electric passenger vessels
14:39 First supply of bunker fuel by Gazpromneft Marine Bunker to the brand new cruise ship Mustai Karim
13:52 MABUX releases weekly review of global bunker market
13:21 VIKING delivers first of ambulance boat trio for Hellenic Coastguard
12:32 Grain exports via Krasnodar Krai based seaports in Jan-Jul jump 32%
12:14 Port of Oakland import cargo volume grew 6.4 percent in July
11:33 MacGregor receives EUR 18 million RoRo orders from Japan
10:52 Australia authorities issue fumigation requirements for the 2020/2021 high risk season
10:17 Sea Port of St. Petersburg half-year cargo volume rose 3%
10:14 MABUX: Bunker market this morning, Aug 13
09:52 Crude futures prices retreat
09:32 Baltic Dry Index as of Aug 12
08:26 ME-GI engine sails through sea trials

2020 August 12

18:57 Risavika LNG index for September up by 8.9 % week on week
18:27 Andreas Rieckhof new Chairman of Hamburg Messe und Congress GmbH Supervisory Board
18:08 At the three Hamburg container terminals throughput volume down 12.0 % in H1 2020
18:07 Sri Lanka Ports Authority assures safe handling of dangerous cargo under UN regulations
17:47 Rosmorport’s Azov-Black Sea branch adds TSHD Sommers to its fleet
17:43 Boluda Towage Europe takes on two new tugs from Damen Shipyards Group
16:49 Investors set to inject in excess of RUB 19 bn in federal port infrastructure facilities development
15:44 MoD eyes placing more orders for the Steregushchiy class corvettes with Amur Shipyard
15:17 Joint R&D Starts for Use of Ammonia in Marine Transportation to Reduce GHG Emissions
14:47 CMA CGM announces PSS from Asia to North Europe