• 2018 March 19 16:30

    ClassNK releases Guidelines for Direct Load Analysis and Strength Assessment of hull structure

    Leading classification society ClassNK has released its Guidelines for Direct Load Analysis and Strength Assessment of hull structure. These guidelines incorporate the load and structural consistent analysis structural evaluation method, ClassNK said in its press release.

    As vessels being constructed today continue increasing in size, structural strength assessments during the design stage are essential in helping ensure the safety and integrity of hull structures even in the harshest conditions of the ocean.

    Direct strength calculations in structural strength assessments of hulls are one of the class requirements included in both ClassNK’s “Rules and Guidance for the Survey and Construction of Steel Ships” and the International Association of Classification Societies’ “Common Structural Rules” (IACS CSR). Simplified formulae, which calculate loads according to principle ship particulars and loading conditions, are used to carry out structural strength assessments. However, these simplified formulae were developed to cover load conditions estimated from actual ships, and have not yet been evaluated for increased sizes and configurations of vessels not yet constructed. Therefore in some cases, structural strength assessment that takes the loads of each individual vessel characteristics into account is essential.

    Structural strength assessment methods based on “load and structural consistent analysis” take the influence of waves at sea into consideration when directly estimating loads, and are therefore able to closely replicate actual ship conditions. As a result, shipyards and design companies are widely implementing these assessment methods.

    In order to help ensure the safety of this new generation of larger and more advanced vessels, ClassNK developed guidelines for direct load analysis and direct strength assessment methods as essential elements of class requirements. They will be updated to reflect the latest findings from research and development initiatives. The class notation “PS-DA-DLA” and/or “PS-FA-DLA” is respectively affixed to the classification characters of a ship when strength assessments have been carried out for all cargo areas in accordance with the guidelines.




2018 April 27

09:43 APL honoured with “Ship Operator Award” at Seatrade Maritime Awards Asia 2018
09:16 Baltic Dry Index down to 1,375 points

2018 April 26

18:35 British Ports Association elects Alec Don as new Chairman
18:05 AIDA launches 2018 cruise season in Rostock
17:35 Cruise season begins in Stockholm
17:05 Royal IHC delivers 4000 tonnes crane vessel GULLIVER to Scaldis
16:49 Tallink launches virtual customer services assistant Nemo
16:34 IMO meeting in July to continue 2020 preparations
16:05 Aker Solutions upgrades Aberdeen site to target growing subsea services market
15:50 Cruise season in Tallinn starts on April 26 with this year’s first cruise vessel Viking Sea calling the Old City Harbour
15:35 New report of Intrernational Transport Forum assesses Japan’s ambition to become an international bunkering hub for LNG
15:34 MEPC 72: ISO confirms plans to develop interim guidance for 0.50%S bunker fuel
15:33 Hamburg newly elected Board Member for Cruise Europe Association
15:19 50 percent Co2 cut by 2050 – governments must acknowledge enormity of what IMO has agreed - ICS
14:49 IMO takes first step toward Arctic HFO ban, but first needs to define ‘HFO’
14:10 Highway section of Crimea Bridge passed acceptance tests (photo)
13:02 The newly established Klaveness Combination Carriers AS to form part of the solution to the ambitious climate strategy passed on by IMO
12:24 IPCSA is new honorary partner for Ports 4.0 Conference in Tallinn
12:22 Revenue at port of Amsterdam grows in 2017
12:01 GTT and Sembcorp Marine sign a license agreement for the design and construction of membrane tank solutions
11:48 Boskalis towage joint venture Keppel Smit Towage names first LNG powered harbor tug in South East Asia
11:39 2,258 icebreaker escort operations performed in eastern part of Gulf of Finland this winter navigation season
11:39 DP World reports 7.3 % gross volume growth in first quarter of 2018
11:13 Bunker prices are slightly down at the Far East ports of Russia (graph)
10:42 Klaipėdos nafta starts allocation of LNG terminal capacities for new gas year
10:15 Brent Crude futures price up 0.61% to $74.45, Light Sweet Crude – up 0.48% to $68.38
09:54 IMO reaffirmed support for its African Member States
09:32 Azerbaijan Caspian Shipping Company’s shipyard repaired ferry vessel owned by Sea Trade Fleet of Turkmenistan
09:17 Baltic Dry Index up to 1,376 points

2018 April 25

18:31 Westcon appeals the court judgement regarding the TSV Safe Scandinavia conversion
18:18 Three-day event held in Papua New Guinea focused on safety of domestic ferries
18:16 Fast ferry for Angolan Transport Ministry launched at Damen Shipyards Singapore
18:12 DNV GL develops offshore safety guidance for Greek Regulator
17:56 Sredne-Nevsky Shipyard launches yet another minesweeper of Project 12700
17:29 Qatargas delivers its first LNG cargo to Bangladesh as part of agreement with Petrobangla
17:02 Russian Railways announces 2017 Consolidated Results under IFRS
16:37 Polskie LNG CEO Paweł Jakubowski: LNG terminal extension program is speeding up
16:05 Wärtsilä partners with the Maritime and Port Authority of Singapore to promote maritime technologies
15:48 Profit attributable to shareholders of NOVATEK decreased by 39.3% to RUB 43.1 billion
15:30 Volga Shipping Company opens navigation on the Upper Volga river
15:14 MOL expands its NVOCC business with the unified brand "MOL Worldwide Logistics"
15:06 BWMS manufacturers and stakeholders set up new association BEMA
14:55 Innovative Damen RSD Tug 2513 kicks-off introduction tour in Italy
14:09 Ilari Kallio appointed Chief Digital Officer at Konecranes
13:20 Nakilat records 13% increased profits for the first quarter of 2018
12:59 Philippines accedes to air pollution and energy efficiency rules
12:33 Cruise season begins at the Port of Gdansk
12:09 HELCOM progresses firmly towards reducing input of pollutants into the Baltic Sea
11:51 8,791 ships are fitted out with the GLONASS navigation equipment - Dmitry Rogozin
11:28 All seaports in Crimea will be fully equipped with GLONASS system in 2018 - Dmitry Rogozin (photo)
11:09 Keppel Offshore & Marine signs MOU with MPA and TCOMS to jointly develop autonomous vessels
10:50 LUKOIL BoD recommends dividend distribution for 2017 in the amount of RUB 215 per ordinary share
10:26 Brent Crude futures price up 0.08% to $73.8, Light Sweet Crude – down 0.13% to $67.61
10:09 WinGD wins marine propulsion Emissions Reduction Award
09:45 Bunker prices are going up at the Port of Saint-Petersburg, Russia (graph)
09:20 Baltic Dry Index up to 1,306 points
09:08 The Port of Rotterdam welcomes IMO’s first step in reducing CO2 from shipping
08:17 Keppel on track to deliver South East Asia’s first LNG powered tug

2018 April 24

18:43 GAC South Africa expands into Port Elizabeth
18:29 Summa Group and Rosneft denied holding negotiations on Novorossiysk Commercial Sea Port