- Resources & Information
This guide focuses on the potential physical damage that can incur on board bulk carriers due to the improper handling, loading and discharging of heavy and high-density cargoes.
It covers topics such as:
Chapter 1: Hull Structural Failure
Chapter 2: Potential Problems
Chapter 3: Loads, Hull Structure and Design
Chapter 4: Cargo Distribution
Chapter 5: Loading Guidance Information
Chapter 6: Planning and Control of Cargo Handling
Chapter 7: Ballast Water Management at Sea
Chapter: 8 IACS and Bulk Carrier Safetylang="en-GB"
In 2019, about 11,700 bulk carriers represent 35% of the world fleet gross tonnage. Heavy and high-density cargoes – mineral ores for example – make high physical demands on ships’ structures, especially in the cargo hold area.
Bulk carriers must be handled with care in port as well as at sea. Stevedores and ships’ officers responsible for cargo operations become key partners for ship safety, because the lives of seafarers may ultimately depend on careful cargo handling. Ship-to-shore planning, information and communication become vital.
Port and terminal authorities, together with owners and classification societies, therefore have a role to minimise risk in bulk carrier operations. IACS – whose members class over 90% of the world bulk carrier fleet – has investigated why bulk carriers have become vulnerable to structural problems, how their safety margins can be increased and how day-to-day operations can become safer for their seafarers.
IACS’ research shows that improper handling of heavy, high density cargo during cargo loading and discharge may cause excessive stress on ship structures and physical damage to holds and transverse bulkheads. Over time, this may reduce or threaten structural safety margins when the ship is at sea in heavy weather. Careful cargo handling helps maintain bulk carrier safety – bad practice lowers safety margins and increases the risk of damage.
This IACS booklet is part of a continuing series of publications dedicated to safer bulk carrier operations. Summarising the main problems in loading and discharging heavy and high-density cargo, it then considers technical factors from the viewpoints of design limitations and the ship safety responsibilities of the ships’ officers.
The main cargo handling risks are:
American Nautical Services, Inc.
3311 S Andrews Ave, Suite 11
Fort Lauderdale, FL 33316
United States of America
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