Load Line Convention 1966 PDF

Loadline Convention 1966 Geir M. Moholdt USN –høst 2024. 13.11.2024 Oppsummering kvalitativ 1 https://www.youtube.com/watch? v=6E0bT6B5Zm4 Learning objectives  Background for the convention  How to prevent water ingress  Requirements to keep the certificate  Understandi...

Loadline Convention 1966 Geir M. Moholdt USN –høst 2024. 13.11.2024 Oppsummering kvalitativ 1 https://www.youtube.com/watch? v=6E0bT6B5Zm4 Learning objectives  Background for the convention  How to prevent water ingress  Requirements to keep the certificate  Understanding and use of load line zones  Origin of Load Lines Historically, the concept of a load line evolved during the 1870s in Great Britain to guard against merchant ships being overloaded Lloyd's Register established a minimum freeboard requirement for its classed ships, to ensure that a ship had good reserve buoyancy in heavy boarding seas After considerable persuasive efforts by Samuel Plimsoll, Parliament extended the requirement to all British merchant ships; thus was born the "Plimsoll Mark“  International Convention on Load Lines An International Load Line Certificate (1966) shall be issued for a period specified by the Administration, which shall not exceed five years from the date of issue. Ships draft marks  All the ships have draft marks in the forward, aft and midship region  These marks are used to verify the draft of the ship in any loading condition...  Lines, letters, figures shall be painted in white or yellow on a dark ground or in black on a light ground  Purpose of the loading line The fundamental purpose of Load Lines is to allow a maximum legal limit up to which a ship can be loaded – hence maintaining sufficient freeboard Is to ensure the seaworthiness of the intact (undamaged) vessel, accomplished by:  Ensuring a robust hull that can withstand severe sea conditions (i.e., structural design, construction, and maintenance Purpose of the loadine line…  Ensuring weathertight & watertight integrity (i.e., coamings; exposed doors, hatches, hull valves, etc, are in good working condition  Ensuring that the vessel has reserve buoyancy and is not overloaded (by limiting the maximum loaded draft) Purpose of the loadline cont Ensuring rapid drainage of water on deck (boarding seas) (by adequate arrangement of freeing ports in bulwarks) Ensuring safety of crew while working on deck (by increased freeboard to reduce boarding seas, guardrails) Ensuring that modifications to vessel do not compromise seaworthiness (modifications must be approved by LL assigning authority, Class)  Zones and Areas Load Line Zones and Seasonal Areas  Location of loadline The decision as to where the load line shall be situated is made at the time the ship is constructed and the decision process is overseen by the ship's Classification Society which issues the Load Line Certificate and supervises the placing of the loadline This mark is situated approximately amidships on both sides of the vessel  Load Line Mark The Load Line Mark shall consist of a ring 300 millimetres (12 inches) in outside diameter and 25 millimetres (1 inch) wide which is intersected by a horizontal line 450 millimetres (18 inches) in length and 25 millimetres (1 inch) in breadth, the upper edge of which passes through the centre of the ring The centre of the ring shall be placed amidships and at a distance equal to the assigned summer freeboard measured vertically below the upper edge of the deck line  Details of marking The ring, lines and letters shall be painted in white or yellow on a dark ground or in black on a light ground They shall also be permanently marked on the sides of the ships to the satisfaction of the Administration The marks shall be plainly visible and, if necessary, special arrangements shall be made for this purpose The present Convention shall not apply to Ships of war New ships of less than 24 metres (79 feet) in length; Existing ships of less than 150 tons gross Pleasure yachts not engaged in trade Fishing vessels  Nothing herein shall apply to ships solely navigating The Great Lakes of North America and the River St. Lawrence as far east as a rumbline drawn from Cap des Rosiers to West Point, Anticosti Island, and, on the north side of Anticosti Island, the meridian of longitude 63ºW; The Caspian Sea The Plate, Parana and Uruguay Rivers as far east as a rumb line drawn between Punta Norte, Argentina, and Punta del Este, Uruguay  Zones or areas A port standing on the boundary line between two zones or areas shall be regarded as within the zone or area from or into which the ship arrives or departs  Surveys and inspections A survey before the ship is put in service, which shall include a complete inspection of its structure and equipment in so far as the ship is covered by the present Convention This survey shall be such as to ensure that the arrangements, material and scantlings fully comply with the requirements of the present Convention  Surveys and inspections cont A periodical survey at intervals specified by the Administration, but not exceeding five years, which shall be such as to ensure that the structure, equipment, arrangements, material and scantlings fully comply with the requirements of the present Convention  Surveys and inspections cont A periodical inspection within three months either way of each annual anniversary date of the certificate, to ensure that alterations have not been made to the hull or superstructures which would affect the calculations determining the position of the load line  Load Line Mark Not like this But like this  Endorsement The periodical inspections referred to in paragraph (1)(c) of this Article shall be endorsed on the International Load Line Certificate (1966) or on the International Load Line Exemption Certificate issued to a ship exempted under paragraph (2) of Article 6 of the present Convention International Load Line Certificate  Issue of certificates An International Load Line Certificate (1966) shall be issued to every ship which has been surveyed and marked in accordance with the present Convention An International Load Line Exemption Certificate shall be issued to any ship to which an exemption has been granted under and in accordance with paragraph (2) or (4) of Article 6 Cancellation by the Administration in case of Material alterations have taken place in the hull or superstructures of the ship such as would necessitate the assignment of an increased freeboard The certificate is not endorsed to show that the ship has been inspected The structural strength of the ship is lowered to such an extent that the