This section of the Guidelines is intended to assist all
parties interested in verifying compliance with damage stability requirements.
6.1 Verification of compliance with damage stability
requirements should be documented in accordance with the company's
operating procedures and the company's safety management system. This
should include a method of retaining manual calculations and/or stability
instrument printouts used to verify compliance, so that this information
can be provided to third parties, such as company auditors, surveyors
or port State control inspectors. It is recommended that records are
retained on board for a minimum of three years to ensure they are
available at the next Safety Management Certificate (SMC) audit.
6.2 The following documentation may be used to
demonstrate compliance with damage stability requirements when available
on board the ship:
6.2.1 In the case where the ship is loaded in
accordance with an approved loading condition from the approved stability
information.
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.1 Approved stability information (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.2 Approved damage stability calculations (if
approval is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
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.3 The actual recorded loading condition.
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.4 Confirmation of the approved loading condition
upon which compliance is based.
Comparison of the two conditions should confirm that the
live loading condition lies within the acceptable tolerances defined
by the Administration; refer to the annex, paragraph 4.
6.2.2 In the case where a ship is loaded to a
condition which is not an approved loading condition, and the verification
is made on board using a manual check of critical GM/KG data.
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.1 Approved stability information (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.2 Approved damage stability calculations which
incorporate critical damage GM/KG data, where these critical data
clearly indicate if their derivation is dependent upon any initial
assumptions or restrictions in the loading condition (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.3 The actual recorded loading condition.
-
.4 Confirmation that the recorded loading condition
complies with any initial assumptions or restrictions used to simplify
derivation of the critical damaged GM/KG data.
-
.5 Check calculation or record sheets confirming
the GM/KG of the recorded loading condition meets the approved critical
damage GM/KG data for all relevant damage cases, including lesser
cases (such as one compartment damage cases for two compartment ships),
where relevant.
6.2.3 In the case where a ship is loaded to a
condition which is not an approved loading condition, and the verification
is made ashore using a manual check of critical GM/KG data.
-
.1 Approved stability information (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.2 Approved damage stability calculations which
incorporate critical damage GM/KG data, where these critical data
clearly indicate if their derivation is dependent upon any initial
assumptions or restrictions in the loading condition (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.3 Authorization from the Administration or RO
acting on its behalf accepting the use of critical GM/KG data at the
shore office to verify damage stability.
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.4 The actual recorded loading condition and evidence
of transmission of this loading condition to the shore office for
approval.
-
.5 Confirmation that the recorded loading condition
complies with any initial assumptions or restrictions used to simplify
derivation of the critical damaged GM/KG data. This check may not
be made by the stability software and a manual check must be made
in this case.
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.6 Check calculation or record sheets confirming
the GM/KG of the recorded loading condition meets the approved critical
damage GM/KG data for all relevant damage cases, including lesser
cases (such as one compartment damage cases for two compartment ships)
where relevant.
6.2.4 In the case where a ship is loaded to a
condition which is not an approved loading condition, and the verification
is made on board against critical GM/KG data using a stability instrument
of the 2008 IS Code and MSC.1/Circ.1229 Type 2 (or an equivalent
standard specified by the Administration or RO acting on its behalf).
-
.1 Approved stability information (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.2 Approved damage stability calculations which
incorporate critical damage GM/KG data, where these critical data
clearly indicate if their derivation is dependent upon any initial
assumptions or restrictions in the loading condition (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.3 The actual recorded loading condition.
-
.4 Confirmation that the actual recorded loading
condition complies with any initial assumptions or restrictions used
to simplify derivation of the critical damaged GM/KG data. This check
may not be made by a stability instrument and a manual check must
be made in this case.
-
.5 Authorization from the Administration or RO
acting on its behalf accepting the use of a stability instrument to
verify conditions of loading on board the ship.
-
.6 Copy of any approval for the stability instrument
specified in the authorization issued by the Administration or RO
acting on its behalf.
-
.7 Evidence of any check calculations specified
in the authorization issued by the Administration or RO acting on
its behalf to demonstrate that the stability instrument remains accurate.
-
.8 Output data from the stability instrument confirming
the GM/KG of the recorded loading condition meets the approved critical
damage GM/KG data for all relevant damage cases, including lesser
cases (such as one compartment damage cases for two compartment ships),
where relevant.
6.2.5 In the case where a ship is loaded to a
condition which is not an approved loading condition, and the verification
is made ashore against critical GM/KG data using a stability instrument
of the 2008 IS Code and MSC.1/Circ.1229 Type 2 (or an equivalent
standard specified by the Administration or RO acting on its behalf).
-
.1 Approved stability information (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.2 Approved damage stability calculations which
incorporate critical damage GM/KG data, where these critical data
clearly indicate if their derivation is dependent upon any initial
assumptions or restrictions in the loading condition (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.3 The recorded loading condition and evidence
of transmission of this loading condition to the shore office for
approval.
-
.4 Confirmation that the recorded loading condition
complies with any initial assumptions or restrictions used to simplify
derivation of the critical damaged GM/KG data. This check may not
be made by the stability instrument and a manual check must be made
in this case.
-
.5 Authorization from the Administration or RO
acting on its behalf accepting the use of the stability instrument
to verify conditions of loading on board the ship.
-
.6 Copy of any approval for the stability instrument
specified in the authorization issued by the flag State or RO.
-
.7 Output data from the stability instrument confirming
the GM/KG of the recorded loading condition meets the approved critical
damage GM/KG data for all relevant damage cases, including lesser
cases (such as one compartment damage cases for two compartment ships)
where relevant.
6.3 In the case where a ship is loaded to a condition
which is not an approved loading condition, and the verification is
made by submission of this loading condition directly to the Administration
or RO acting on its behalf for approval.
-
.1 Approved stability information (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.2 Approved damage stability calculations (if
approval is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.3 The recorded loading condition and evidence
of transmission of this loading condition to the Administration or
RO acting on its behalf for approval.
-
.4 Response from the Administration or RO acting
on its behalf confirming that the loading condition has been verified
for compliance with damage stability and is approved for departure.
6.4 In the case where a ship is loaded to a condition
which is not an approved loading condition, and the verification is
made on board using stability instrument of the 2008
IS Code and MSC.1/Circ.1229 Type
3 (or an equivalent standard specified by the flag State or RO).
-
.1 Approved stability information (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.2 Approved damage stability calculations (if
approval is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.3 The actual recorded loading condition.
-
.4 Authorization from the Administration or RO
acting on its behalf accepting the use of the stability instrument
to verify conditions of loading on board the ship, and a copy of any
documentation referred to by the authorization.
-
.5 Evidence of any check calculations specified
in the authorization issued by the Administration or RO acting on
its behalf to demonstrate that the stability instrument remains accurate.
-
.6 Output data from the stability instrument confirming
the loading condition meets intact and damage stability. All relevant
damage cases should be considered.
6.5 In the case where a ship is loaded to a condition
which is not an approved loading condition, and the verification is
made ashore using stability software of the 2008
IS Code and MSC.1/Circ.1229,
Type 3 (or an equivalent standard specified by the Administration
or RO acting on its behalf).
-
.1 Approved stability information (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.2 Approved damage stability calculations (if
approval is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.3 The recorded loading condition and evidence
of transmission of this loading condition to the shore office for
approval.
-
.4 Authorization from the Administration or RO
acting on its behalf accepting the use of the stability instrument
at the shore office to verify conditions of loading on board the ship.
-
.5 Copy of any approval for the stability software
specified in the authorization issued by the Administration or RO
acting on its behalf.
-
.6 Output data from the stability software confirming
the loading condition meets intact and damaged stability. All relevant
damage cases should be considered.
6.6 In the case where a ship is loaded to a condition
which is within an approved range of loading conditions:
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.1 Approved stability information (if approval
is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.2 Approved damage stability calculations (if
approval is subject to conditions given by letter or in a design appraisal
document, a copy of this letter or document in addition).
-
.3 The actual recorded loading condition.
-
.4 Confirmation of the approved range of loading
conditions being applied and that all parameters of loading defined
within this range fall within the prescribed limits.