CargoMax™: Direct Damaged Stability Feature

Prelude

Existing shipboard documentation & traditional loading computers often cannot demonstrate compliance with the Statutory damage stability requirements.

The Marpol, IGC & IBC regulations require that all operational loading conditions meet the damage stability requirements. However typical onboard documentation only demonstrate compliance for a limited number of approved intact loading conditions and tank filling levels. Any deviations from these standard loading conditions may be considered as non-compliance to these regulations or the ISM code.

Flag & port state regulators are becoming increasingly stringent in their interpretation of whether a specific loading condition ‘significantly’ varies from standard loading condition.

The CargoMaxTM Direct Damaged Stability Module evaluates statutory damaged stability requirements for Oil, Gas, Product & Chemical Tankers for any loading condition.

Industry Alert

Insufficient pre-departure checks are being made on tank vessels to ensure compliance with statutory damage stability requirements. There is a common misconception that evaluation of standard conditions is sufficient to demonstrate compliance with the damage stability regulations for all load cases. Also, assessment against a required GM curve based on tank loading restrictions will limit efficient vessel loading.

Rules Requirements

The following industry regulations require that tank vessel must load strictly in accordance with the conditions that meet both intact & damaged stability.

  • Oil Tankers - Marpol Annex 1, Reg 25
  • Chemical Tankers - IBC Code, Chapter 2
  • Gas Carriers - IGC Code, Chapter 2

IACS (URL5) makes it mandatory for loading computers fitted to any IACS class vessel contracted after 1 July 2005, to be approved to verify all aspects of stability, including damage requirements.

Owners & Masters Obligations

ISM provisions mandate Masters to ensure that statutory requirements for stability compliance, including damage stability are met prior to departure. Owners are required to provide means/tools to the Master to carryout the pre-departure checks.

The Solution

CargoMax™ Direct Damaged Stability Module enables the Masters to verify the required GM and stability for any loading condition for all possible damage scenarios based on class approved damaged cases before leaving the port.

Greater Flexibility

Direct damage stability calculation of limiting GM allows much greater flexibility in loading patterns. The direct verification of any desired loading condition in terms of MARPOL, IBC or IGC damage stability requirements, implies not just stringent compliance with these mandatory rules, but also a much greater capability to accommodate combinations of segregated cargo and multi-port load and discharge practices.

Benefits of using CargoMax Direct DamStab Module:

  • Guaranteed Class Approval
  • Automatically analyze all class approved damage cases based on the current loading condition.
  • Meets & exceeds all statutory damaged stability requirements.
  • Vessel is not restricted in loading variation.
  • Allows much greater capability to accommodate unlimited combinations of segregated cargo.
  • Fleet managers can be assured of consistent fleet compliance.
  • Additionally provides analysis module for officers to evaluate emergency flooding situations.

© Herbert Software Solutions, Inc. 2009