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IACS Unified Requirement Bulk carriers external document — linked, not hosted

UR Z10.2 — Hull surveys of bulk carriers

Rev.37 · Feb 2023 · IACS · English

The survey requirement that governs almost every bulk-carrier gauging job: what must be examined close-up, how much thickness measurement is required at each renewal survey, and the tables that turn ship age into a number of transverse sections and a percentage of side shell frames. Read together with the ESP Code, which carries the detailed gauging annexes.

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What it contains, for a TM technician

  • The renewal-survey extent tables: transverse sections by age band (0 / 1 / 2 / 3 across ≤5, 5–10, 10–15, >15 years), at least one within 0.5L amidships.
  • Close-up survey extent for side shell frames, escalating from representative frames in the forward hold to every frame in every hold.
  • Table VIII — extent of thickness measurement at areas of substantial corrosion; the trigger for every five-point densification.
  • The interpretations that decide how a sheet is filled: “selected plates” means one point on one plate in three; deck, bottom and wind-and-water strakes take two points per plate.
  • Requirements for the TM firm and for measurements to be taken simultaneously with the close-up survey.

What changed in Rev.37

Rev.37 (Feb 2023) came in the same package as Z10.1 Rev.25, Z10.4 Rev.18 and Z10.5 Rev.20, harmonising the Z10 family with the amended ESP Code (MSC.525(106)); the Z10.1 side of that package applies to surveys from 1 July 2024. The gauging patterns themselves are unchanged — what moved is the alignment of terminology and survey scope with the Code.

Handbook pages that work from this document

A new revision of this document automatically returns every page above to status: draft and puts it on the January work list. Not corrected within 60 days, the page is unpublished until it is.

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