" 17 APRIL 2012 "
GLOBAL MARINE BUREAU INC.
KIND TO : ALL AGENTS & SURVEYORS
F R O M : GMB HEAD OFFICE
SUBJECT : NEW MEASURES TO SHIP’S DETENTION
To officially and broadly circulate all concerned on Newly Adopted Measures to Ship’s Detention
which were resolutely established by this Organization, ensuring to promote and enhance the
level of registered ships further to the standards required in compliance with the National and
International Instruments with decrease of its detention ratio.
Considered present shipping circumstances and policies on ship’s inspections by MOUs over the
world have been recently more getting tightened and strengthened in order to eliminate
substandard vessels in each region, particularly in grave reflection on Under-Performing Ships
introduced by the Tokyo MOU in Asia-Pacific Region which aimed at increasing pressures on
substandard ships to publish a list of Under-Performing Ships which have been detained for three
or more times by the Tokyo MOU during last twelve (12) months which are subjected to more
frequent inspections at each port of call within the region.
III. Measures To Ship’s Detention
1. When a vessel was detained due to detainable deficiencies found during PSC inspections, an
Occasional Survey shall be necessarily conducted by the Authorized Surveyor as an
essential requirement. Where the detained vessel was released from detentions without
attending surveys required, an Occasional Survey shall be mandatorily carried out by the
Authorized Surveyor at her next port of call or another at its conveniences according to ship’s
circumstances in order to verify the rectification of all deficiencies indicated before as well as
to assess general conditions of the vessel for prevention of another occurrence of detention
which however, shall not exceed fifteen (15) days since her release from the detention
caused, in any case.
2. Scope of the Obligatory Occasional Survey to be conducted shall cover all conditions and
requirements relating to Maritime Safety and Security, Pollution Prevention and due
compliance with all National and International Laws and Regulations as applicable to the
vessel, equivalent to Mandatory Annual Surveys the result of which shall be
communicated to this Head Office in writing without fail, not later than seven (7) days from
its completion of the surveys.
3. When a ship was detained again due to detainable deficiencies found in the course of PSC
inspections within three (3) months from the date of her previous detention caused, the
vessel shall be immediately carried out the Special Audit for the Safety Management
Certificate (SMC) by the Authorized Auditor as the Issuing Authority in combination with
the Obligatory Occasional Survey. In this case, the Organization may consider the nature of
identified deficiencies in details and especially determine the comprehensive range that the
SMC Special Audit will be solely carried out.
4. When the vessel that has been carried out the SMC Special Audit was detained due to
detainable deficiencies within three (3) months from the date of her previous detention in
records, the Special Audit for the Company as Document of Compliance (DOC)
Operator shall be immediately carried out by the Authorized Auditor.
5. When a vessel was detained repeatedly due to detain able deficiencies within six (6) months
from the date of her previous detention occurred even though all above proceedings including
the DOC Special Audit have been completed by the Authorized Surveyor/Auditor, the
Existing Certificate(s) of Document of Compliance and/or the Safety Management Certificate
issued under this Organization will be suspended and/or canceled on determination by the
This circulation will be in force with immediate effect just on the release.