- Keywords: Statutory, Maritime
Relevant for ship owners and managers as well as design offices.
OThe retroactive requirement for vessels with the highest ice classes was introduced in Trafi’s Ice Class Regulations (hereafter “the Finnish ice class”) in 2002, which has remained unchanged since then. The current requirement is given in TRAFI/494131/03.04.01.00/2016, which came into force on 1 December 2017.
Vessels whose keel was either laid or at a similar stage of construction before 1 September 2003 can only keep their current Finnish ice class after 1 January of the year the vessel turns 20 years if the installed engine power complies with the retroactive minimum requirement. This engine power requirement has increased and may be higher than the installed power.
If the minimum engine output required by Trafi is not met, a lower equivalent Finnish ice class may be considered. The possible lowering of the Finnish ice class does not affect the ice class given by the class society, but it will influence Finnish fairway dues and result in traffic limitations to Finnish and Swedish ports.
There are three options for proving that the engine output requirement is met:
- Simple but conservative calculation formulas according to Trafi rules. The advantage of these formulas is that information about the hull form is not needed.
- If the vessel does not comply with the simple formulas, more complex calculations can be carried out using certain hull form data as input. The advantage is that these calculations are less conservative and require less engine power. At the same time, to determine the input values, a lines plan or electronic hull form representation is needed. For older vessels, such data can be difficult to obtain.
- Model tests in an ice basin can be carried out to determine the resistance of the hull in ice and to assess the power needed. The model tests normally result in much lower power requirement, but they are expensive and time-consuming. In addition, information about the hull lines is also needed. Such a model test should be discussed in advance with Trafi or the Swedish Transport Agency.
- Timely action is required to avoid downgrading or loss of equivalent Finnish ice class for older vessels (keel laid before 1 September 2003) with a high ice class – Ice(1A), Ice(1A*), Ice(1A*F), E3 or E4 – when reaching 20 years of age.
- Upon request, and subject to a fee, DNV GL may verify compliance with the retroactive Finnish ice class rules engine output requirement. Confirmation of compliance will be entered in the vessel’s Appendix to the Classification Certificate or Technical File. If the installed engine power is found to be insufficient, the DNV GL/DNV/GL ice class notation will be kept, but it will be specified in the Appendix to the Classification Certificate or Technical File which Finnish ice class the vessel complies with.
Trafi – Ice classes of ships including current and past regulations and equivalences
- For customer: DATE - Direct Access to Technical Experts via My Services on Veracity
- Otherwise: use our office locator to find the nearest DNV GL maritime office.
Outcome of IMO's Maritime Safety Committee, MSC 101 - automation and fuel oil safety
The 101st session of the Maritime Safety Committee (MSC) was held in London from 5 to 14 June 2019. This statutory news summarizes the main topics discussed, such as maritime autonomous surface ships (MASS), fuel oil safety, and safety of ships operating in polar waters, as well as other key decisions.
CIC 2019 focusing on emergency systems and procedures
The Tokyo and Paris MoUs have developed a Concentrated Inspection Campaign (CIC) on emergency systems and procedures. The CIC will run from 1 September to 30 November 2019. This PSC news gives an overview of DNV GL’s recommendations for focus items and support for preparation.
2020 Sulphur update - outcome of the MEPC 74
The 74th session of the Marine Environment Protection Committee (MEPC 74) was held at IMO in London on 13–17 May 2019. This was the last MEPC meeting before the 0.50% global sulphur limit takes effect on 1 January 2020, and the focus was on the implementation and completion of guidelines to help stakeholders prepare and ensure consistent implementation. We strongly recommend stakeholders to prepare in due course and update plans according to the latest IMO guidance. This statutory news contains a summary of sulphur-related resolutions and circulars adopted at MEPC 74.
EU MRV and IMO DCS - some practical recommendations
This technical news contains some recommendations relevant to both EU MRV and IMO DCS.
Prepare for the Global Sulphur Cap 2020 with the IMO Ship Implementation Plan
The IMO has agreed on 1 January 2020 as the date for switching to 0.50% sulphur fuel globally. Now, as ship owners face the daunting task of preparing for the fuel oil switch, proper planning is essential. The IMO Guidance for developing a Ship Implementation Plan (SIP) is a useful tool, and described further in this technical news.
Survey by remote inspection techniques - use of approved service suppliers
The use of remote inspection techniques (RIT) is increasing. Today, drones, climbers, or robot arms, can be used as an alternative to close-up surveys in both the DNV GL rules and IACS Unified Requirements. RIT may significantly reduce the survey time and costs, while improving the safety of surveyors and the owner’s personnel. From 1 January 2019, DNV GL has approved the use of service suppliers for RIT. This technical news explains how RIT can be used and how suppliers can achieve DNV GL approval.
IMO requirements July 2018 to May 2021
This statutory news summarizes the most important IMO requirements entering into force from 1 July 2018 up to and including 31 May 2021.
Outcome of the IMO SSE 6 meeting - from habitable life boat environments to Ro-Ro deck fires
The IMO sub-committee on Ship Systems and Equipment (SSE) met in London on 4–8 March 2019. This statutory news summarizes the main topics discussed, such as, life-saving appliances, fire safety of Ro-Ro passenger ships, and on-board lifting appliances. All agreements made at the meeting are subject to final approval by MSC 101 in June 2019.