ประกาศกรมเจ้าท่า
ที่ 203/2566
เรื่อง แนวทางปฏิบัติในการตรวจสอบและบำรุงรักษาอุปกรณ์การผูกเรือ รวมถึงเชือกผูกเรือ (Guidelines for Inspection and Maintenance of Mooring Equipment including Lines)

เพื่อให้การปฏิบัติงานเกี่ยวกับการตรวจเรือโดยสาร การตรวจเรือสินค้า และการออกและการสลักหลังใบสำคัญรับรองเกี่ยวกับความปลอดภัยแห่งชีวิตในทะเล พ.ศ. 2559 และประกาศกรมเจ้าท่า ที่ 65/2564 เรื่อง แนวทางปฏิบัติในการตรวจและออกใบสำคัญรับรองเกี่ยวกับความปลอดภัยแห่งชีวิตในทะเล เป็นไปอย่างมีประสิทธิภาพ สอดคล้องกับข้อกำหนดของอนุสัญญาระหว่างประเทศ ว่าด้วยความปลอดภัยแห่งชีวิตในทะเล ค.ศ. 1974 (SOLAS), as amended) อธิบดีกรมเจ้าท่าจึงประกาศกำหนดให้ใช้แนวทางปฏิบัติในการตรวจสอบและบำรุงรักษาอุปกรณ์การผูกเรือ รวมถึงเชือกผูกเรือ (Guidelines for Inspection and Maintenance of Mooring Equipment including Lines) ที่รับรองโดยข้อมติของคณะกรรมการความปลอดภัยทางทะเล ที่ MSC.1/Circ.1620 เพื่อเป็นแนวทางปฏิบัติในการตรวจและออกใบสำคัญรับรองเกี่ยวกับความปลอดภัยแห่งชีวิตในทะเลที่เกี่ยวข้องกับการตรวจสอบและบำรุงรักษาอุปกรณ์การผูกเรือรวมถึงเชือกผูกเรือ ตามกฎข้อบังคับสำหรับการตรวจเรือกำหนดหลักเกณฑ์ วิธีการ และเงื่อนไขในการออกใบสำคัญรับรองเกี่ยวกับความปลอดภัยแห่งชีวิตในทะเล พ.ศ. 2559 โดยละเว้นข้อกำหนดของข้อมติประจำภาคผนวกที่แนบท้ายประกาศนี้

ประกาศ ณ วันที่ 21 กรกฎาคม พ.ศ. 2566
กริชเพชร ชัยช่วย
ผู้ตรวจราชการกระทรวงคมนาคม รักษาราชการแทน
อธิบดีกรมเจ้าท่า

ภาคผนวก

แนวทางปฏิบัติในการตรวจสอบและบำรุงรักษาอุปกรณ์การผูกเรือ รวมถึงเชือกผูกเรือ (Guidelines for Inspection and Maintenance of Mooring Equipment including Lines) ตามข้อมติของคณะกรรมการความปลอดภัยแห่งชาติ ที่ MSC.1/Circ.1620

The Maritime Safety Committee, at its 102nd session (4 to 11 November 2020), having considered a proposal by the Sub-Committee on Ship Design and Construction, at its sixth session, and recognizing the importance of inspection and maintenance of mooring equipment including lines, approved the Guidelines for inspection and maintenance of mooring equipment including lines, as set out in the annex.

Member States are invited to bring the annexed Guidelines to the attention of shipowners, ship managers, bareboat charterers and other organizations or persons responsible for operation of ships.

Member States are also invited to bring the annexed Guidelines to the attention of shipmasters, ships' officers and crew and all other parties concerned, for providing guidance on inspection and maintenance of mooring equipment including mooring lines.

***

INTERNATIONAL MARITIME ORGANIZATION

# ANNEX
## GUIDELINES FOR INSPECTION AND MAINTENANCE OF MOORING EQUIPMENT INCLUDING LINES
### 1 General
#### 1.1 Purpose
The purpose of these Guidelines is to provide recommendations and guidance for maintenance and in-service inspections of mooring equipment including lines and tails, criteria for identifying worn-out lines and tails for removal from service before failure, and criteria for selection of replacement mooring lines and tails.
#### 1.2 Application
These Guidelines apply to all ships. Certain provisions are intended for reference by shipboard personnel, and other provisions are intended for Company personnel responsible for selecting and procuring replacement mooring lines.
### 2 Definitions
For the purpose of these Guidelines:
#### 2.1 Bend radius (D/d ratio)
Bend radius (D/d ratio) means the diameter, D, of a mooring fitting divided by the diameter, d, of a mooring line that is led around or through the fitting. The D/d ratio is used by mooring line manufacturers to specify the minimum radius of a fitting around or through which a mooring line of diameter "d" should be led, in order to reduce or mitigate bend loss of strength of the mooring line.
#### 2.2 Company
Company means company, as defined in SOLAS regulation IX/1.2.
#### 2.3 Line Design Break Force (LDBF)
Line Design Break Force (LDBF) means the minimum force that a new, dry, spliced, mooring line will break at. This is for all synthetic cordage materials.
#### 2.4 Mooring arrangement
Mooring arrangement means the configuration of the mooring equipment and fittings and other design features of the ship related to the mooring operation, i.e. lighting and communication equipment.
#### 2.5 Mooring boat
Mooring boat means the boat handling mooring lines between the ship and ashore mooring facilities during mooring and unmooring operations and does not include harbour ship assist tugs (see the Guidelines on minimum training and education of mooring personnel (FAL.6/Circ.11/Rev.1)).
#### 2.6 Mooring equipment and fittings
Mooring equipment and fittings means items such as winches, capstans, bollards, bitts, fairleads, rollers, chocks, etc. and also includes mooring lines.
#### 2.7 Mooring line configuration
Mooring line configuration means all components of an individual mooring line, including tails, eye splices, etc. Any change or replacement of a component is a change to the line's configuration, unless a component is replaced by a part having the same specification as in the original configuration.

The above essential functions are representative major duties of positions in the company's service department. Specific duties and responsibilities may vary based upon departmental needs. Other than that, it also includes some other duties which may be assigned similar to the above consistent with the knowledge, skills and experience required for the job. Not all of the duties may be assigned to a position.

3.3.2 Any defect discovered to the mooring lines during mooring operations should be immediately reported to the Master by all parties concerned including shore-based mooring personnel. If no actions are taken as appropriate the competent authorities should be informed, as necessary.

4 Inspection and maintenance of mooring lines

4.1 Inspection of mooring lines

4.1.1 To prevent the deterioration of mooring lines to a condition which may result in the failure of the line during mooring operations, the periodic inspection of mooring lines, mooring line tails and associated attachments should be included in the onboard maintenance plan or equivalent maintenance management system. The maintenance plan may be computer based.

4.1.2 The requirements for inspection of individual mooring lines will be specific to the type of mooring line used on board. In general, onboard inspection of mooring lines will be based on manufacturer recommendations and by visual inspection of the outside of the mooring line to identify excessive wear or damage, e.g. external abrasion, external cut, kink, heat damage such as fusion and slackening or fraying of eye splices. Such visual inspections should be based on:

1 the recommendations of the mooring line and/or tail manufacturer, particularly the criteria provided for the assessment of mooring line condition;
2 operational experience regarding the performance of the mooring line and/or mooring line tail during previous mooring operations; and
3 the environmental conditions to which the mooring lines and/or mooring line tails are routinely exposed.

4.1.3 In the case of jacketed synthetic fibre mooring lines, detailed visual inspection of the condition of the synthetic fibre line may not be possible. The condition of the external jacket is not an accurate indicator of the condition of the load-bearing synthetic fibre material within the mooring line.

4.2 Maintenance of mooring lines

The Company should establish the maintenance procedures as required in paragraph 3.1 of these Guidelines. The maintenance procedures should specify replacement of in-service.mooring lines and may include the rotation of mooring lines.

4.3 Criteria for condemning worn-out mooring lines

4.3.1 The replacement of in-service mooring lines which have been assessed as no longer suitable for use should be based on the removal prior to failure and in accordance with criteria provided by the manufacturer.

4.3.2 For visual inspection and replacement of mooring lines, additional advice is provided in industry guidance on mooring line and mooring line tail inspections.

The above essential functions are representative major duties of positions in the ship's organization chart. Specific duties and responsibilities may vary based upon departmental needs. Other than that, it depends on the knowledge, skills and experience required to perform those duties effectively.

5.3 The Company should establish procedures for the maintenance of all mooring lines under their control. This would include both the physical maintenance of the line itself and the regular inspection by qualified personnel. Should any part of the mooring system be found unsatisfactory or non-compliant with these guidelines, work shall be carried out without delay to bring them up to standard.

5.6 Where the acceptable minimum bend radius recommendations for a particular mooring line are not achievable, the service life of the line may be less than that stated by the manufacturer and therefore the line may need to be replaced before the end of the service life recommended by the manufacturer. The condition of lines regularly exposed to below the acceptable minimum bend radius should be subject to particular attention during inspections.

5.7 When selecting replacement mooring lines with high stiffness, including wire and high modulus synthetic lines, consideration should be given to the use of synthetic tails in order to reduce peak loading when the ship is secured alongside.

5.8 Consideration of the use of synthetic tails on high stiffness mooring lines should take into account industry and manufacturer guidance and the potential effects of synthetic tails on the stored energy of mooring lines under tension. The use of tails can change the characteristics of a mooring line and its behaviour in the event of failure. High stiffness mooring lines may exert significant dynamic force and have significant snap-back zones when used with synthetic tails that have a low stiffness.

6 Updating of ship documents and record-keeping

6.1 Records of inspection and maintenance of mooring equipment and inspection and replacement of mooring lines should be retained on board. Such records should be kept for a period determined by the Company, but in any event the records should be kept until completion of the next annual survey.

6.2 Consideration should be given to control and certification of mooring lines, wires, tails and associated attachments. Manufacturers' test certificates for mooring lines, joining shackles and synthetic tails should be kept on board and properly linked back to the equipment.

6.3 The items to be recorded during inspection and maintenance should be determined, taking into account the recommendations of the manufacturers of the mooring lines.

6.4 Any change of mooring line configuration requires updating of the towing and mooring arrangements plan.

7 References

(1) Oil Companies International Marine Forum (OCIMF), Mooring Equipment Guidelines, 4th Edition 2018, ISBN: 978-1-85609-771-0.

(2) Ian C. Clark BSc, MSc, Master Mariner, MNi, The Nautical Institute, Mooring and Anchoring Ships Vol.1, Principle and Practice, ISBN: 9781906915934, 2009.

(3) Walter Vervloesem AMNI, The Nautical Institute, Mooring and Anchoring Ships Vol.2, Inspection and Maintenance, ISBN: 9781870077941, 2009.