For suppliers · IMPA section 23

Rigging and deck equipment suppliers for ships: shackles, pilot ladders and test certificates

Deck stores split into two worlds. Shackles, wire clips, blocks and slings are lifting gear: tested, marked with a safe working load and certified before use. Pilot and embarkation ladders are type-approved safety equipment with a fixed service life. A supplier who knows which world a line belongs to quotes with the right paper.

Section 23

ITEMS: 2,405GROUPS: 36 · FAMILIES: 235BUYING GUIDES: 8SOURCES: 9

GeoMarineHub editorial team · reviewed 2026-10-10

Who buys rigging and deck equipment on board, and why

The bosun and chief officer raise deck requisitions in practice. For pilot ladders the rules name the role: rigging and pilot embarkation are supervised by a designated responsible officer, who inspects the ladder before and after each use, with a detailed inspection every three months, under the IMO performance standards that take effect with amended SOLAS regulation V/23 on 1 January 2028.[1]

Those standards create steady demand. At least one spare compliant pilot ladder and one spare set of manropes must be carried, and a ladder is removed from service within 36 months of manufacture or 30 months of being placed in service, whichever comes first. Under the current resolution A.1045(27), side ropes are at least 18 mm in diameter with a breaking strength of at least 24 kN each, and shackles and securing ropes at least as strong.[1,2]

Embarkation ladders follow the LSA Code: steps not less than 480 mm long, 115 mm wide and 25 mm deep, spaced between 300 and 380 mm apart. For gangways and accommodation ladders, IMO guidelines call for supporting wires and guard ropes renewed as needed and a static test at the specified maximum working load at every five-yearly survey.[5,9]

Loose lifting gear is examined on a cycle. On UK ships, LOLER requires thorough examination of accessories for lifting at least every six months, and ship’s lifting equipment is not used unless tested by a competent person within the preceding five years — so worn or uncertified shackles and slings are replaced, not argued over.[8]

What requisitions ask for

Shackles are the largest group in IMPA section 23 by a wide margin, followed by the Crosby range, wire clips, thimbles and sockets, turnbuckles, wood and steel cargo blocks, hatch cover parts and canvas. Chains and links, ladders, cargo hooks, dunnage bags and plywood, oil-pollution countermeasures and container lashings make up the rest.

A shackle line names the type — D or bow, screw-pin or bolt — the size and usually the working load limit; a ladder line names the length in metres or steps and the approval. Container lashing lines often follow the ship’s cargo securing manual, so the part must match what is already on board.

Largest groups in IMPA section 23 — 2,405 items in 36 groups
GroupIMPA items
Shackles744
Crosby Products337
Wire Clips / Thimbles / Sockets212
Turnbuckles186
Wood Cargo Blocks108
Hatch Cover Parts97
Canvas / Canvas Maintenance Items82
Chains / Links72

Counted from the IMPA-coded catalogue this site is built on. Every group is browsable in the section 23 catalogue.

Certificates and documents to have ready

Pilot ladder type approval
Pilot ladders, their securing means and manropes must be type-approved by the Administration, under a manufacturer quality system audited by a competent authority. DNV notes the equipment must be tagged or permanently marked by the manufacturer. For US-flag ships, 46 CFR subpart 163.003 sets the approval and production tests.[1,3,4]
Embarkation ladder approval
Embarkation ladders are a listed MED item (MED/1.29) for EU ships; US-flag ships need approval series 160.117, or 160.017 for a rope ladder.[6,7]
Test and thorough examination certificate
Under LOLER, a lifting accessory is not used after manufacture or repair until tested by a competent person, then thoroughly examined and certified for use. Each accessory must be marked with its safe working load.[8]

Quoting rigging and deck equipment on GeoMarineHub

Quote the working load limit and the certificate type with every lifting line, and the date of manufacture with every pilot ladder — a ladder that has sat in a warehouse has already used part of its 36 months.[1]

Deck lines travel with mooring and wire rope. On GeoMarineHub, choose section 23 among your categories and activate your ports; lines from the section posted there reach you, and bids stay sealed. Register as a supplier — free.

Sources

  1. [1] IMO — Resolution MSC.576(110), Performance standards for pilot transfer arrangements — https://wwwcdn.imo.org/localresources/en/KnowledgeCentre/IndexofIMOResolutions/MSCResolutions/MSC.576(110).pdf
  2. [2] IMO — Resolution A.1045(27), Pilot transfer arrangements — https://wwwcdn.imo.org/localresources/en/KnowledgeCentre/IndexofIMOResolutions/Documents/A%20-%20Assembly/1045(27).pdf
  3. [3] DNV — Pilot transfer arrangement: equipment makers — https://www.dnv.com/maritime/insights/topics/pilot-transfer-arrangement/Equipment-makers/
  4. [4] 46 CFR 163.003-1 — Pilot ladder (USCG, via Cornell LII) — https://www.law.cornell.edu/cfr/text/46/163.003-1
  5. [5] IMO — Resolution MSC.48(66), International Life-Saving Appliance (LSA) Code — https://wwwcdn.imo.org/localresources/en/KnowledgeCentre/IndexofIMOResolutions/MSCResolutions/MSC.48(66).pdf
  6. [6] EUR-Lex — Commission Implementing Regulation (EU) 2026/1434, marine equipment requirements — https://eur-lex.europa.eu/eli/reg_impl/2026/1434/oj/eng
  7. [7] 46 CFR 199.110 — Survival craft muster and embarkation arrangements (USCG, via Cornell LII) — https://www.law.cornell.edu/cfr/text/46/199.110
  8. [8] UK MCA — MGN 332 (M+F) Amendment 3, Lifting Operations and Lifting Equipment Regulations 2006 — https://assets.publishing.service.gov.uk/media/662fafc39e82181baa98a963/MGN_332_Amd_3_FINAL__002_.pdf
  9. [9] IMO — MSC.1/Circ.1331/Rev.1, Revised guidelines for construction, installation, maintenance and inspection/survey of means of embarkation and disembarkation (IRI copy) — https://wpsso.register-iri.com/wp-content/uploads/MSC.1-Circ.1331-Rev.1.pdf

A practical page for suppliers, not legal or certification advice. Conventions, class rules and flag requirements change; the issuing body, the buyer's specification and your contract have the last word.