JIS F 2025-1992 PDF

Full title and description

St JIS F 2025-1992 — Ships — Cable clenches. This Japanese Industrial Standard specifies requirements for cable clenches (anchor-chain/chain-clench devices) used aboard ships to secure the end of an anchor chain to the inside of the chain locker and associated deck bulkhead fittings.

Abstract

This Standard provides definitions, construction and performance requirements for cable clenches (anchor releasers/chain clench devices) used to secure anchor chain ends inside a ship's chain locker. It covers necessary material references and related testing or inspection references for safe use in shipboard anchoring arrangements.

General information

• Status: Superseded (replaced by a later edition of JIS F 2025).
• Publication date: 31 December 1992 (1992 edition).
• Publisher: Japanese Standards Association (JSA) / Japanese Industrial Standards.
• ICS / categories: Deck equipment and installations — ICS 47.020.50 (deck equipment).
• Edition / version: 1992 edition (revision of earlier 1976 edition; the Standard was later reviewed/updated in JIS history entries).
• Number of pages: Not specified for the 1992 text in public metadata; an earlier 1976 JIS F 2025 edition is recorded as 11 pages.

Scope

The scope covers cable clenches used for securing the anchor chain cable end to the inside of the chain locker on ships. It defines the intended use (shipboard anchoring/chain-stowage), references for materials and castings where applicable, and sets out dimensions, strength and installation-related requirements necessary to ensure reliable retention of the anchor chain end under normal and emergency conditions. The Standard is focused on deck/anchoring equipment rather than the anchor chain specification itself.

Key topics and requirements

• Definitions and terminology for cable clenches (anchor releaser / chain clench types).
• Classification and types (plug type, dog type, fixed type and similar forms used on ships).
• Dimensional drawings and nominal sizes correlated to anchor-chain diameters and grades.
• Material specifications and casting / forged components references (references to relevant JIS material standards such as steels and bronzes).
• Strength, load-bearing and safety requirements including design margins appropriate for deck equipment.
• Installation, welding/fastening and marking requirements for shipboard fitting and inspection access.
• Referenced test methods and related JIS standards for components (materials, castings, etc.).

Typical use and users

Used by shipbuilders, marine equipment manufacturers, classification societies, ship repair yards and ship operators. Typical users apply the Standard when designing, procuring or inspecting anchor-chain retention devices (cable clenches / anchor releasers) for merchant and large commercial vessels. Manufacturers and suppliers often reference the Standard when specifying chain-diameter ranges and certification for class societies. Typical chain-diameter examples used in association with JIS F 2025 device types often fall in the range commonly cited for large ships (e.g., roughly 38–120 mm depending on type and grade).

Related standards

The Standard cross-references material and casting standards (for example JIS G 4051 for carbon steels and JIS H 5111 for bronze castings) and sits alongside other shipbuilding and deck-equipment JIS documents. Later and related JIS F series standards on deck fittings, chain stoppers and other anchoring equipment should be consulted for a complete ship anchoring equipment specification.

Keywords

JIS F 2025, cable clench, anchor releaser, chain clench, chain stopper, shipboard deck equipment, chain locker, anchor chain retention, Japanese Industrial Standard.

FAQ

Q: What is this standard?

A: JIS F 2025-1992 is a Japanese Industrial Standard titled "Ships — Cable clenches" that sets out requirements for cable clench (anchor-chain clench / anchor releaser) devices used to secure the anchor chain end inside ship chain lockers.

Q: What does it cover?

A: It covers the purpose, types, materials references, dimensional and strength-related requirements, and installation/marking considerations for cable clenches used aboard ships; it does not replace anchor-chain material standards but references them where required.

Q: Who typically uses it?

A: Shipbuilders, marine-equipment manufacturers, classification societies, ship repair yards and operators use it when designing, manufacturing, inspecting or certifying cable clenches and related deck fittings.

Q: Is it current or superseded?

A: The 1992 edition has been superseded; a later edition of JIS F 2025 exists (JIS F 2025:2021), and the 1992 text is recorded as superseded (supersession noted in public metadata with superseded date in 2022). Consult the most recent JIS F 2025 edition for current requirements.

Q: Is it part of a series?

A: Yes — it is part of the JIS F series (shipbuilding and marine equipment standards). Related JIS F documents cover other deck fittings, chain stoppers, cast components and shipbuilding equipment; cross-references to material standards appear in the bibliography.

Q: What are the key keywords?

A: Cable clench; anchor releaser; chain clench; chain stopper; ship deck equipment; chain locker; JIS F 2025; anchor chain retention.