Section 2 Character of classification and class notations

2.1.2  Zone 1. A zone where the maximum significant wave height based on long-term significant wave height statistics, excluding the highest five per cent of the observed waves, does not exceed 1,6 m.

2.1.3  Zone 2. A zone where the maximum significant wave height based on long-term significant wave height statistics, excluding the highest five per cent of the observed waves, does not exceed 1,0 m.

2.1.4  Zone 3. A zone where the maximum significant wave height based on long-term significant wave height statistics, excluding the highest five per cent of the observed waves, does not exceed 0,5 m.

2.1.5  Type notation. One of the following Notations will be assigned to ships indicating that the ship has been arranged and constructed in compliance with the Rules and as defined in the relevant Chapter of Pt 4 Ship Structures (Ship Types). Details regarding further extensions of Class Notations as applicable for specific ship types are given in these Chapters as well.

• A1 I.W.W. Cargo Ship or A1 I.W.W. Cargo Barge. See Pt 4, Ch 1 Dry Cargo Ships
• A1 I.W.W. Container Ship or A1 I.W.W. Container Barge. See Pt 4, Ch 1 Dry Cargo Ships
• A1 I.W.W. Bulk Carrier or A1 I.W.W. Bulk Carrier Barge. See Pt 4, Ch 1 Dry Cargo Ships
• ‘A1 I.W.W. Ferry’, ‘A1 I.W.W. Roll on-Roll off Ship’ or ‘A1 I.W.W. Roll on-Roll off Barge’. See Pt 4, Ch 2 Ferries and Roll on-Roll off Ships
• ‘A1 I.W.W. Pontoon’ or ‘A1 I.W.W. Pontoon, self propelled’. See Pt 4, Ch 3 Pontoons
• ‘A1 I.W.W. Tanker Type G’ or ‘A1 I.W.W. Barge Type G’. See Pt 4, Ch 5 Tankers of Type G
• ‘A1 I.W.W. Tanker Type C’ or ‘A1 I.W.W. Barge Type C’. See Pt 4, Ch 6 Tankers of Types C and N
• ‘A1 I.W.W. Tanker Type N Closed’ or ‘A1 I.W.W. Barge Type N Closed’. See Pt 4, Ch 6 Tankers of Types C and N
• ‘A1 I.W.W. Tanker Type N Closed, Double Hull’ or 'A1 I.W.W. Barge Type N Closed, Double Hull’. See Pt 4, Ch 6 Tankers of Types C and N
• ‘A1 I.W.W. Tanker Type N Open with flame screens’ or ‘A1 I.W.W. Barge Type N Open with flame screens’. See Pt 4, Ch 6 Tankers of Types C and N
• 'A1 I.W.W. Tanker Type N Open with flame screens, Double Hull' or 'A1 I.W.W. Barge Type N Open with flame screens, Double Hull'. See Pt 4, Ch 6 Tankers of Types C and N
• ‘A1 I.W.W. Tanker Type N Open’ or ‘A1 I.W.W. Barge Type N Open’. See Pt 4, Ch 6 Tankers of Types C and N
• 'A1 I.W.W. Tanker Type N Open, Double Hull' or 'A1 I.W.W. Barge Type N Open, Double Hull'. See Pt 4, Ch 6 Tankers of Types C and N
• ‘A1 I.W.W. – Water tanker’ or ‘A1 I.W.W. – Wine tanker’ or ‘A1 I.W.W. – Edible oil tanker’ or ‘A1 I.W.W. – Water barge’ or ‘A1 I.W.W. – Wine barge’ or ‘A1 I.W.W. – Edible oil barge’. See Pt 4, Ch 7 Water Tankers, Wine Tankers and Edible Oil Tankers
• ‘A1 I.W.W. Pusher Tug’ or ‘A1 I.W.W. Launch’. See Pt 4, Ch 8 Tugs, Pusher Tugs and Launches
• ‘A1 I.W.W. Passenger Ship’. See Pt 4, Ch 9 Passenger Ships.

2.1.6  Cargo notation. A notation indicating that the ship has been designed, modified or arranged to carry one or more particular cargoes, e.g. sulphuric acid. Ships with one or more particular cargo notations are not thereby prevented from carrying other cargoes for which they are suitable.

2.1.7  Loading sequence notation (L.S.). A notation indicating that the ship has been designed, modified or arranged to be loaded and/or discharged according to a special or to a defined sequence, e.g. loading sequence ‘O’, loading sequence ‘D’, see Pt 3, Ch 4, 2 General and relevant ship type Chapters in Pt 4 Ship Structures (Ship Types).

2.1.8  Loading notation. A notation indicating that the ship has been designed, modified or arranged for unusual and/or non-uniform cargo distributions, e.g. ‘specified non-uniform loading conditions’, see Pt 3, Ch 4, 2 General and relevant ship type Chapters in Pt 4 Ship Structures (Ship Types).

2.1.9  Ice notation. A notation indicating that the ship has been designed, modified or arranged to navigate in ice:

ICE.

2.1.10  Zone notation. A notation indicating that the ship has been designed, modified or arranged to operate in Zones 1 and/or 2, where conditions as specified for the particular zone are not being exceeded during any voyage of the ship.

2.1.11  Dangerous Goods notation. Double-hull dry cargo ships built in compliance with Chapter 9, Section 9.1.0.80 of the ADN and complying with the additional requirements of Pt 4, Ch 1, 12 Additional requirements for ships carrying dangerous goods will be eligible to be classed:

DG.

2.1.12  Pressure valve setting notation. Tankers complying with the requirements of Pt 4, Ch 5 Tankers of Type G, Pt 4, Ch 6 Tankers of Types C and N or Pt 4, Ch 7 Water Tankers, Wine Tankers and Edible Oil Tankers will, in case of tanks of the closed type, have their design pressure valve setting of the relief valves of the cargo tanks entered in the class notation, e.g.:

p.v. +50 kPa.

2.1.13  Specific gravity notation. Tankers complying with the requirements of Pt 4, Ch 5 Tankers of Type G, Pt 4, Ch 6 Tankers of Types C and N or Pt 4, Ch 7 Water Tankers, Wine Tankers and Edible Oil Tankers will have the design specific gravity of the cargo tanks entered in the class notation, e.g.:

S.G. 1.20.

2.1.14 Corrosion resistant materials. Tankers complying with the requirements of Pt 4, Ch 5 Tankers of Type G, Pt 4, Ch 6 Tankers of Types C and N or Pt 4, Ch 7 Water Tankers, Wine Tankers and Edible Oil Tankers where the cargo tanks have been constructed of corrosion resistant materials, e.g. stainless steel, or have been lined with corrosion resistant linings, e.g. rubber lining, will have the following notations entered in the class notation:

‘CR (s.stl)’, ‘CR (r.l)’.

2.2.1 All Inland Waterways Ships, when classed, will be assigned one or more character symbols as applicable. For the majority of ships, the character assigned will be A1 I.W.W. or A1 I.W.W.

2.2.2 A full list of character symbols for which ships may be eligible is as follows:

1. This distinguishing mark will be assigned, at the time of classing, to new ships constructed under LR’s Special Survey, in compliance with the Rules, and to the satisfaction of the Classification Committee.

2. A This character letter will be assigned to all ships which have been built or accepted into class in accordance with LR’s Rules and Regulations, and which are maintained in good and efficient condition.

3. 1 This character figure will be assigned to:

   1. Ships having on board, in good and efficient condition, anchoring and/or mooring equipment in accordance with the Rules.

   2. Ships classed for a special service, for which no specific anchoring and mooring Rules have been published, having on board, in good and efficient condition, anchoring and/or mooring equipment approved by the Classification Committee as suitable and sufficient for the particular service.

   3. Ships having on board, in good and efficient condition, anchoring and/or mooring equipment in accordance with established National or International Regulations and approved by the Classification Committee as suitable and sufficient for the particular service. The service limits where applicable may be entered in the class notation.

4. N This character letter will be assigned to ships on which the Classification Committee has agreed that anchoring and mooring equipment need not be fitted in view of their particular service.

5. T This character letter will be assigned to ships which are intended to perform their primary designed service function only while they are anchored, moored, towed or pushed, and which have, in good and efficient condition, adequately attached anchoring, mooring, towing or pushing equipment which has been approved by the Classification Committee as suitable and sufficient for the intended service.

2.2.3 In cases where the equipment is found to be seriously deficient in quality or quantity, the class of the ship will be liable to be withheld.

2.3.1 When considered necessary by the Classification Committee, or when requested by an Owner and agreed by the Classification Committee, a class notation will be appended to the character of classification assigned to the ship. This class notation will consist of one of, or a combination of: a type notation, a cargo notation, a loading sequence notation, a loading notation, an ICE notation and zone notation, e.g. A1 I.W.W., L.S. ‘O’, ICE, Zone 2.

2.3.2 Details of additional requirements in view of a ship type, particular cargoes, loading sequence, Ice or Zones 1 and 2, are given in the Chapters of Pt 3 Ship Structures (General) and Pt 4 Ship Structures (Ship Types) which apply to such ships and cargoes.

2.3.3 Service extension notations (service in areas which are not considered as Inland Waterways) may be assigned where, under specified conditions, the ship operates on an agreed route or in an agreed operating area. These conditions are such that the structural and system requirements specified in these Rules are sufficient.

These conditions are to be included in the class notation (e.g. geographical limits, maximum permissible distance out to sea, wind force, sea condition), as appropriate.

Where operation of the ship in the extended service area is permitted in association with defined loading conditions only, this service restriction is also to be included in the class notation.

These notations may be assigned in one of the following forms:

1. Specified route service. Service between two or more ports or other geographical features, which will be indicated in the Register Book, e.g. ‘Service between Flushing and Ostend, maximum five miles seaward and windforce not exceeding Beaufort scale 5 from sea or Beaufort scale 6 from land and in association with defined loading conditions’.

2. Specified operating area service. Service within one or more geographical area(s), which will be indicated in the Register Book, e.g. ‘Baltic Sea Service’ (within specified geographical limits and under specified conditions).

2.4.1 The following class notations may be assigned as considered appropriate by the Classification Committee.

LMC

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This notation will be assigned when the propelling and essential auxiliary machinery has been constructed, installed and tested under LR’s Special Survey and in accordance with LR’s Rules and Regulations, see also Pt 5, Ch 1, 7.1 General.

LMC

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This notation will be assigned when the propelling and essential auxiliary machinery has been constructed under the survey of a recognised authority in accordance with Rules and Regulations equivalent to those of LR and has been installed and tested under LR’s Special Survey in accordance with LR’s Rules and Regulations.

LMC

=

This notation will be assigned when the propelling arrangements, steering systems, pressure vessels and the electrical equipment for essential systems have been constructed, installed and tested under LR's Special Survey and are in accordance with LR's Rules and Regulations. Other items of machinery for propulsion and electrical power generation including propulsion gearing arrangements and other auxiliary machinery for essential services that are in compliance with LR Rules and supplied with the manufacturer's certificate will be acceptable under this notation. The system arrangements of propelling and essential auxiliary machinery are required to be appraised by LR, and found to be acceptable to LR. See Pt 1, Ch 2, 2.7 Application notes 2.7.2.

2.4.2 Machinery class notations will not be assigned to ships of which the hulls are not classed or intended to be classed with LR.

2.4.3 The notations LMC, LMC, LMC, LMC (without ) and MCH will in general not be assigned to non-propelled craft, but individual cases will be considered on their merits.

2.5.1 The following class notations are associated with the design and operation of a ship and may be assigned as considered appropriate by the Classification Committee, on application from the Owners:

ABN( ) This notation will be assigned where a vessel has had its airborne noise measured and certified in accordance with LR’s ShipRight Additional Design and Construction Procedure for the determination of airborne noise emissions from marine vessels, and the sound power and sound pressure are found to be less than the assessment criterial limits it contains. The parentheses are to contain the characters associated with the most stringent assessment criteria limits that the airborne noise of the vessel satisfies.

2.6.1 In addition to any class notations, an appropriate descriptive note may be entered in Column 6 of the Register Book indicating the type of ship in greater detail than is contained in the class notation, and/or providing additional information about the ship’s design and construction. This descriptive note is not a LR classification notation and is provided solely for information.

2.6.2 ShipRight(). Where one or more of LR’s ShipRight procedures as detailed in the Rules and Regulations for the Classification of Ships, July 2022, Pt 1, Ch 2, 2.8 Descriptive notes 2.8.2 have been satisfactorily applied, then a descriptive note showing the associated characters of the procedure(s) within brackets will, at all Owner's request, be entered in column 6 of the Register Book, preceded by the word ShipRight, e.g. ShipRight(IHM, SERS).

2.6.3 READY(). When satisfactory preparation has been made at the time of completion and delivery or refit of the vessel for a structure, a system or equipment which is subject to classification then this descriptive note, showing the associated classification characters within brackets will, at the Owner’s request, be entered in the Register Book preceded by the word READY, e.g. READY(RIGGING).

If the asset is READY() for multiple notations the descriptive note will appear as READY(notation 1, notation 2).

Satisfactory preparation includes but is not limited to:

• Clear and comprehensive definition of the intended structure, system or equipment in line with classification requirements.
• The interface boundary delimiting the physical and operational boundary is clearly defined and sets out the components that are omitted during construction.
• A list of interface requirements even though these are not typically part of the requirements for classification. These are to be accompanied by technical solutions or reference to design features that show how each of the interface requirements is met. The interface location and requirements are to be jointly developed by the Client and LR.
• Interface requirements may be quantitative or qualitative. Suitable safety criteria are to be defined.
• The design of the asset fully incorporates the intended structure, system or equipment. This is to be verified during appraisal.
• As far as practicable, the fitting of the omitted structure, system or equipment is not to depend on the removal of other structures, systems or equipment but should only depend on the addition of the omitted structure, system or equipment.

Each of the design documents which are required for classification is assessed as if the structure, system or component is fitted. If details of the system are unknown at the time of application for the descriptive note, design constraints may, on occasion, be confirmed by an Approval in Principle (AiP). This course of action will be captured in the descriptive note in the following manner: READY(NOTATION(A)) where A indicates the AiP.

Additional interface documents are assessed with particular attention to the practicality and feasibility of the boundary definition.

Construction is carried out as per appraised plans omitting the structure, system or equipment set out by the interface boundary.

The READY() descriptive note is awarded based on the documented verification of the above requirements. Appraisal and Survey by LR will be carried out as far as practicable for the interface arrangements and, if applicable, the partially installed system.

Notations are included in the list of those eligible for the READY() descriptive note at the discretion of LR.

2.7.1  Propelling and essential auxiliary machinery includes machinery, equipment and systems installed for the ship to be under inland waterway navigation conditions and that are necessary for the following:

1. Maintaining the watertight and weathertight integrity of the hull and spaces within the hull.

2. The safety of the ship, machinery and personnel on board.

3. The functioning and dependability of propulsion, steering and electrical systems.

4. The operation and functioning of control engineering systems for the monitoring and safety of propulsion and steering systems.

5. The operation and functioning of emergency machinery and equipment.

2.7.2  Manufacturer's certificate for assignment of the LMC notation. Acceptance of the manufacturer's certificate for items of machinery for propulsion (including propulsion gearing with single input/output arrangements) and for electrical power generation and for other auxiliary machinery for essential services is subject to the following:

1. The ship is a cargo ship or a tanker that is required to comply with specific Regulatory Body for Inland Maritime Transport requirements for construction under survey relating to the carriage of particular types of hazardous cargoes such as oils, chemicals and dangerous goods.

2. The class notation is acceptable to the relevant Administration.

3. Propulsion power is provided by oil engines or gas turbines which have been type approved in accordance with LR requirements for marine application.

4. Electrical power is provided by generators driven by oil engines or gas turbines which have been type approved in accordance with LR requirements for marine application.

5. The design and manufacture standards for all machinery and associated systems are the applicable LR Rules.

6. The machinery and equipment is manufactured under a recognised quality control system.

7. Propellers, propulsion shafting and multiple input/output gearboxes are not included within the scope of propulsion arrangements for acceptance of a manufacturer's certificate.

2.7.3  Manufacturer's certificate for assignment of the MCH notation. Acceptance of the manufacturer's certificate for propelling and essential auxiliary machinery is subject to the following:

1. The ship is a cargo ship or a tanker that is not required to comply with specific Regulatory Body for Inland Maritime Transport requirements for construction under survey relating to the carriage of particular types of hazardous cargoes such as oils, chemicals and dangerous goods.

2. Propulsion power is provided by oil engines or gas turbines which have been type approved in accordance with LR requirements for marine application.

3. Electrical power is provided by generators driven by oil engines or gas turbines which have been type approved in accordance with LR requirements for marine application.

4. The power of any engine or gas turbine is less than 2,250 kW and the cylinder bore of any engine is not greater than 300 mm.

5. The design and manufacturing standards for machinery and associated engineering systems are the applicable LR Rules or other marine standards acceptable to LR.

6. The machinery and equipment is manufactured under a recognised quality control system.