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Corrigendum 1 to Engineering Circular No. 4 of 2013 - Carriage of oil as cargo in offshore Supply / Support Vessels (OSV) and applicability of the provisions of MARPOL Annex I -reg.
Applicable to:
Indian seafarers, shipowners, and recognised organisations
Effective Date:
21st May, 2015
Superseded Circulars:
Engineering Circular No. 4 of 2013
Key Changes and Requirements
1. Cargo Tank Size Clarification
Existing OSVs with cargo oil tanks exceeding MARPOL Annex I Regulation 26.4 limits can use these tanks as fuel oil bunker tanks under certain conditions.
- Aggregate cargo capacity: 1000m³ max
- Cargo tank volume: Limited proportionately to comply with Regulation 26.4
- Documentation: Update Stability Booklet, Cargo Plan, IOPP Form 'B', Oil Record Book, and declaration documents
2. Fuel Oil Transfer for Own Use
OSVs can transfer fuel oil from cargo tanks to bunker tanks for their own use, provided it is documented and complies with MARPOL Annex VI Regulation 18.
IOPP Surveyors: Verify compliance with these requirements in addition to Engineering Circular 4 of 2013
Important Note
Non-compliance may result in intervention from Flag State or Port State, including ship detention.
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