Injury highlights hazards to crew in tug-to-barge transits

1200px Seal Of The United States Coast Guard.svg

(WASHINGTON) — While moored at a refinery in Chalmette, La., a towing vessel crewmember fell approximately 30 feet into the tow notch of an oceangoing articulated tug-barge (ATB) after overextending their reach and losing their footing while climbing the barge’s set-in pigeonholes. The fall resulted in multiple head and facial fractures and the crewmember became pinned within the tow notch, requiring mechanical movement of the tow pin system for water rescue. This accident was classified as a serious marine incident, as the injured crewmember received medical treatment beyond first aid and was deemed unfit for continued shipboard duties.

The U.S. Coast Guard investigation into the casualty revealed that the marine employer had safety management system (SMS) procedures requiring the use of fall-arrest equipment (i.e., safety harnesses with self-retracting connection lines) for tug-to-barge transits at heights of six feet or more. At the time of the incident, the towed barge was in ballast with a molded depth measurement of 47 feet, which presented the highest possible freeboard for crew pigeonhole climbing.

During Coast Guard interviews, onboard supervisors expressed inconsistencies and displayed confusion as to when fall-arrest safety harnesses were required by their SMS policy and agreed that additional training or policy clarifications may be necessary for adequate safety harness implementation during pigeonhole transits. Furthermore, the injured party, a junior crewmember with only five days of total maritime experience, did not receive any training on pigeonhole climbing techniques or applicable personal protective gear. Additionally, an affixed gangway was available for use prior to and during the fall incident, but it was not utilized.

Left: Barge pigeonhole embarkation station. Right: View from the deck of the barge showing the pigeonhole vertical drop to the tow notch. U.S. Coast Guard photos

Coast Guard investigators have identified the following recommended measures to mitigate the risks associated with the contributing factors identified above:

• Owners and operators of towing vessels whose crews regularly climb pigeonholes or set-in barge ladders at significant heights during transit to and from tows should ensure that appropriate fall prevention or fall-arrest equipment is installed or readily available for use.
• Owners and operators of towing vessels who have already implemented procedures requiring fall-arrest equipment use during tug-to-barge transits should ensure all crewmembers receive adequate training on how and when to use the equipment.
• If fall-arrest equipment is not available, secure gangways should be used whenever possible to reduce the risks of the overwater transit, including the possibility of falling overboard and becoming entrapped.
• As a reminder, the Coast Guard previously issued guidance for safe passage between articulated tug-barge combinations, which can be found in Navigation and Vessel Inspection Circular (NVIC) 02-81 Change 2.

The Coast Guard issues findings of concern to disseminate information related to unsafe conditions that were identified as causal factors in a casualty and could contribute to future incidents. Findings of concern are intended to educate the public, state, or local agencies about the conditions discovered so they may address the findings with an appropriate voluntary action or highlight existing applicable company policies or state/local regulations.

These findings of concern are provided for informational purposes only and do not relieve any domestic or international safety, operational, or material requirements. For any questions or comments please contact Sector New Orleans Investigations Division by email at SECNOLAIO@uscg.mil.

– U.S. Coast Guard

By Professional Mariner Staff