Overview

Issued when a tank vessel complies with all applicable regulations, the Certificate of Inspection is a crucial document for tank vessels. This certificate is signed by the officer in charge of marine inspection and is essential for ensuring the safety and compliance of cargo operations.

Endorsements

The COI is specifically endorsed for the carriage of flammable or combustible liquids, categorized into grades A, B, C, D, or E. Each endorsement clearly specifies the cargoes regulated under Subchapter O by name, ensuring that only designated substances are transported. It is critical to note that no other dangerous cargo outside these endorsements is permissible to safeguard public safety and adhere to regulations.

Certificate Specifications

The COI includes several important specifications:

• Maximum Cargo Weight: Documented in short tons, this is the heaviest load the vessel can safely carry.

• Maximum Density: Provided in pounds per gallon, this helps determine the type of liquids that can be transported based on their weight characteristics.

• Operating Limitations: Any operational restrictions that the vessel must adhere to during its operation are noted here.

• Limiting Draft: Specifies the water depth required for safe operations, which is crucial for preventing groundings.

• Permit for Vessel Operation: Functions fundamentally as a permit allowing the vessel to carry out its designated operations lawfully and safely.

Barge Document Box

The Certificate of Inspection, along with other important official barge documents, is stored in the United States Coast Guard's tank barge document box or mailbox. This ensures that all necessary documentation is accessible and in compliance with regulations.

COI Inspections

Regular inspections are pivotal for maintaining the COI's validity:

• Void Spaces Inspection: All void spaces (such as wing voids, rakes, and coffer dams) must be inspected for water or cargo presence, without the necessity of entering these areas. Presence of water or cargo might necessitate an internal structural examination.

• Examinations: Vessels must also undergo dry dock, internal structural, and cargo tank internal examinations depending on operational conditions.

Expired Certificates

Even if the COI has expired, a permit (CG 948) for repair to another port may be issued if deemed safe. This permit must be carried in a manner similar to the COI to prevent any operational mishaps.

Certificate Validity

The COI is initially valid for five years but is subject to revocation or suspension if the vessel fails to meet safety regulations or maintain standards. Thorough inspections covering structure, machinery, and equipment condition are essential for compliance.

Important Note: Do not proceed if the COI is expired or missing; in such cases, it is mandatory to notify the watch officer immediately.

Area of Operation & Route

Each vessel's area of operation and its operational limits are determined by the Coast Guard. Tank vessels are required to undergo annual inspections, which can occur within three months before or after the COI anniversary date. These inspections resemble the certification inspection but are generally less detailed.

Hull Examinations

Several types of examinations are mandated for ensuring the hull's safety:

• Dry Dock Examination: Involves removing the vessel from water to conduct extensive assessments.

• Internal Structural Examination: This consists of a thorough examination of main strength members, internal framing, hull plating, voids, and ballast tanks to ensure structural integrity and stability.

Tank Barge Streamline Inspection Program (TBSIP)

This program provides an alternative compliance method for company personnel to monitor and report onboard conditions. Following an evaluation by the Coast Guard marine inspector, companies can obtain annual inspection credits. However, it is important that company personnel cannot substitute for marine inspectors; compliance must be overseen by a qualified Coast Guard officer.

Cargo Authority Attachment (CAA)

CAA certificates must be endorsed for handling Subchapter O cargoes. These endorsements specify:

• Maximum cargo weight

• Maximum density

• Draft regulations

• Enforcement of benzene regulations for specific cargoes

• Historical cargo tank examination dates and mandatory firefighting equipment details

Warning Signs & Documentation

Specific signage must be displayed on tank barges to denote dangerous cargo and necessary safety protocols. Signs must be:

• Readable and Maintained: Clear visibility is paramount for safety.

• Indicating Prohibition: Must communicate no visitors, no smoking, and no open flames on the tank barge.

Additionally, a weatherproofed cargo information card must be displayed on the barge, containing:

• Cargo Identification and Characteristics: Clear detailing of what is being transported.

• Hazards and Safe Handling Instructions: Guidelines essential for safe operations.

• Emergency Procedures: Instructions regarding response to spills, leaks, or equipment breakdowns.

• Firefighting Procedures: Recommendations for suitable media to combat cargo fires and ensure personnel safety.

CAA Regulations

CAA documents are integral to the COI and list authorized cargoes specifically for vapor control transfers. Cargoes not explicitly mentioned in the CAA cannot be transferred utilizing vapor control measures. In the event of unauthorized cargo issues, it is crucial to contact the supervisor or officer of the watch immediately to address safety concerns and compliance issues.