What is Ship- to-Ship Transfer (STS) and also Requirements to Carry Out the Same?

Ships like oil vessels and also gas providers bring massive quantity of freight wholesale which does not need to be unloaded in simply one port yet at various ports. Even some providers like VLCC and also ULCC which are enormous in dimension does not berth in port or jetty for discharge procedure as a result of draught limitations. In such problem ship to deliver transfer is made use of.

A ship to deliver transfer ends up being really affordable as ship does not need to berth at the jetty, specifically for massive oil vessels, which eliminates the port berthing costs as well as additionally shortened the moment for berthing and also mooring. But all these comes with a price of high ecological contamination and also fire danger as possibilities of leak in procedure is constantly there in ocean blue when ship is not tied or it is relocating.

Ship-to-Ship Transfer

What is STS or ship to deliver transfer?

A STS or ship to deliver transfer describes the transfer of ship’s freight, which can be oil or gas freight, in between 2 vendor vessel vessels placed together with each various other.

Either the ships can be stall or the STS procedure can additionally be done while ships are underway. But it calls for appropriate sychronisation, devices and also authorization to do such procedure. Both the masters of the ships are in charge of the whole STS procedure

Following are the needs for performing Ship to Ship transfer procedure:

  • Adequate training of oil vessel’s team accomplishing the procedure.
  • Proper STS devices to be existing on both the vessels and also they need to remain in great problem.
  • Pre preparation of the procedure with alerting the quantity and also kind of freight entailed.
  • Proper interest to the distinction in freeboard and also listing of both the vessel while moving oil.
  • Taking approval from the pertinent port state authority.
  • Properties of Cargo entailed to be understood with offered MSDS and also UN number.
  • A correct interaction and also interaction network to be established in between the ships.
  • Dangers related to the freight like VOC discharge, chain reaction etc to be oriented to the whole staff associated with transfer.
  • Fire battling and also oil spill devices to be existing and also staff to be well educated to utilize them in emergency situation.
  • All standards to be adhered to according to MEPC 59, MARPOL Annex 1 phase 8, SOPEP, SMPEP, STS transfer overview and also functional strategy.


As Per Resolution of MEPC (59) a brand-new phase 8 is contributed to MARPOL Annex I for avoidance of contamination throughout STS procedure in between 2 ships.

This brand-new policy applies for oil vessels of 150 GT yet bunkering procedure and also oil transfer procedures for dealt with or drifting system has actually been omitted.

Following are the essential attributes:

  • The STS procedure strategy need to be authorized by management.
  • The STS procedure strategy is to be in the functioning language and also to be authorized not behind the day of very first yearly study (intermediate or revival under MARPOL annex I) accomplished on or after first J an 2011.
  • The standards of the STS strategy need to remain in conformity with the needs of IMO “Manual on oil pollution prevention, amended section 1”, ICS and also OCIMF “ ship to ship transfer guide”.
  • The strategy might be integrated in SMS called for by the Chapter IX of SOLAS 74, yet all the same strategy is to be authorized as called for by the resolution.
  • After an authorization of management on STS strategy, Operation prior to 1 st April 2012 will remain in conformity to the strategy as for feasible.
  • The full procedure is to be videotaped in Oil Record Book (ORB) and also STS procedure document publication.
  • The over document to be kept in the ship for 3 years.
  • Any oil vessel under STS strategy run under the territorial waters or unique financial area of MARPOL, have to alert the adhering to info to pertinent seaside authority before two days of the start of the STS procedure:

–Ship’s name, telephone call indicator and also IMO number.

–Details of Owner, driver or delivery business.

–Type and also amount of oil for STS procedure.

–Preparation carried out in quick for accomplishing the procedure.

–Estimated time period of the full procedure.

–The procedure to be done underway or in anchorage.

–Identification of STS procedures provider or boss for total advising

  • If there is a hold-up in the ETA, very same have to be notified to the seaside authority.
  • After Delay in ETA, all the info noted over to be re-confirm to seaside authority before 6 humans resources accomplishing the procedure

References: simsl

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