Which type of deficiencies are categorized under Part 3 in the INSURV Identification Number?

The correct answer identifies major alterations as categorized under Part 3 in the INSURV Identification Number. Part 3 specifically addresses deficiencies that are substantial in nature, notably major alterations, that affect a ship’s efficiency, safety, or operational capability. These alterations require detailed reporting because they involve significant changes that might not conform to established standards or that require special consideration in terms of safety and performance impact.

Major alterations differ from other deficiencies since they usually mandate a formal inspection and review process, which can influence the ship’s classification and operational use. This classification helps ensure that the alterations meet necessary regulations and standards, thereby maintaining the integrity and readiness of the ship.

In contrast, minor defects, routine maintenance issues, and documentation errors, while important to address, fall under different categorizations that deal with less severe impacts on the vessel’s operational capabilities and usually do not require the same level of scrutiny as major alterations.

Thus, identifying major alterations as part of Part 3 underscores the importance of thorough investigation and documentation for any substantial changes made to the vessel.