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Prior being scheduled for a call at the LNG Terminal, a vessel should have successfully underwent Elengy registration process and be on the list of vessels registered at the terminal. Cargo scheduling requests with ships nominated by the Shipper and not registered at the terminal are considered on a case-by-case basis.

The Operator notifies the cargo scheduling conditions with the notice of the monthly schedule (as defined in the General Terms and Conditions of the LNG Terminal Access Contract). The cargo scheduling conditions include the vessel scheduling conditions, as well as the other characteristics of the cargo such as the window of arrival, the energy content to be transferred, the LNG quality, etc.

The vessel scheduling conditions can be specific guarantees required from the Shipper, safety inspection prior to the call, technical or operational constraints requested by the Operator, in order to ensure a safe and smooth call of the vessel at the terminal.

Vessel registration

Ship registration is processed by Elengy according to Appendix 2 of the Access Contract to its LNG terminals and to the Ship Approval Procedure below.

LNG terminal access contract

Vessel access at the LNG terminal may be possible according to the terms and conditions of the LNG Terminal Access Contract signed between the Operator and the Shipper (see main appendixes below).

Material Safety Data Sheet (MSDS) for LNG

This Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH) was written by Association Française du Gaz (AFG – French Gas Association):

Specific services

Specific operations carried out by the Vessels at the Terminal, such as gassing-up, cooling-down, technical heel out, bunkering, provisions, etc. are not covered by the contractual laytime (Normative Laytime). Such operations may be tolerated by the Operator in addition to the cargo transfer provided that:

  1. a formal request has been made to the Operator at least five days before the window of arrival, and this request has been accepted, and
  2. the forecasted laytime does not exceed the Normative Laytime. A laytime extension may be granted by the Operator upon preliminary request of the Shipper. The Operator reserves the right to refuse this request.

Oil bunkering of LNG carriers

Oil bunkering of LNG carriers shall comply with the below General Rules.

Gas day

By contract (Framework contract - Section 1 - 1. Definitions), a day is a period beginning at 06:00 (6 a.m.), statutory local time, on a given day and ending at 06:00 (6 a.m.), statutory local time, on the next day.

Normative laytime

This is the normative time from vessel's berthing at the terminal (first mooring rope on land) to vessel's unberthing (all moorings slipped).

For each terminal, the normative laytime depends on the nominal cargo transfer rate and on the quantity transferred.

  1. Montoir-de-Bretagne LNG Terminal:

As the nautical access to the terminal is linked to the slacks of tide, the normative laytime takes also this constraint into account.

Unloading: the nominal unloading rate is 14 000 m3/h of LNG.

The normative laytime shall be:

  • 5 consecutive slacks of tide (approx. 25 hours) for an unloaded quantity up to 180 000 m3 of LNG;
  • 7 consecutive slacks of tide (approx. 37 hours) for an unloaded quantity larger than 180 000 m3 of LNG, to be combined with a laytime extension to be requested by the Shipper.

Reloading: the nominal reloading rate is 4 000 m3/h.

The normative laytime shall be 9 consecutive slacks of tide (approx. 50 hours) for a reloaded quantity up to 150 000 m3 of LNG. For a larger quantity, a laytime extension shall be requested by the Shipper.


Transshipment: the nominal transfer rate is 14 000 m3/h.

The normative laytime shall be 5 consecutive slacks of tide (approx. 25 hours) for a transferred quantity up to 168 000 m3 of LNG. For a larger quantity, a laytime extension shall be requested by the Shipper.


  1. Fos Tonkin LNG terminal:

Unloading: the nominal unloading rate is 4 500 m3.

The normative laytime shall be equal to 32 hours.


Information to take into account prior to a call

Maximum capacity of LNG carriers at:

  • Montoir-de-Bretagne : 267 000 m3 of LNG
  • Fos Tonkin : 75 000 m3 of LNG

Montoir LNG terminal is one of the facilities located in the Nantes Saint-Nazaire Port (Grand Port Maritime de Nantes Saint-Nazaire):

Fos Tonkin LNG terminal is one of the facilities located in the Marseille Fos Port (Grand Port Maritime de Marseille Fos):

  • Fos Tonkin terminal handbook (version October 2018): available upon request

Other documents

Good practices and standards are also available in the following documents:

  • LNG Ship Approval Procedure - Report 04LNG089 (2004), by Gas LNG Europe (GLE).
  • International Safety Guide for Oil Tankers and Terminals - ISGOTT (2020), 6th Edition.
  • LNG and LPG Experience Matrix (2016), by SIGTTO.
  • Recommendations for Liquefied Gas Carrier Manifolds (2018), by SIGTTO.
  • Ship-Shore Compatibility Questionnaire, by SIGTTO.
  • Ship Vetting and its Application to LNG, 2nd edition (2020), by SIGTTO.
  • LNG Transfer Arms and Manifold Draining, Purging and Disconnection Procedure (2012), by SIGTTO.
  • LNG Custody Transfer Handbook, 5th Edition (2017), by GIIGNL.


Elengy accounts for more than 55 years' experience in designing, operating, maintaining and developing LNG terminals.

Overall, Elengy has handled more than 10 000 cargoes in its LNG terminals, delivered by more than 290 different LNG tankers, which is equivalent to approx half of the worldwide fleet.

All Elengy-operated LNG terminals have reached level 6 of DNV's ISRS9© (International Safety Rating System). This rating system enables the performance of management to be assessed in terms of health, personal and industrial safety, the environment (ISO 14001 certification) and quality (ISO 9001 certification).

Elengy's LNG terminals comply with ISPS (International Ship and Port facility Security code) requirements drawn up by the International Maritime Organisation (IMO) to guarantee the safety of terminals and port operations. The plans and safety measures applied at Fos Tonkin and Montoir are drawn up in accordance with the ISPS code.

Elengy is OCIMF-SIRE inspecting company (Ship Inspection REport programme).

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