UNE-EN ISO 12215-5-2019 PDF

Full title and description

UNE-EN ISO 12215-5:2019 — Small craft — Hull construction and scantlings — Part 5: Design pressures for monohulls, design stresses, scantlings determination. This document defines local design pressures, mechanical properties and design stresses used to determine scantlings for monohull small craft (typical hull length up to 24 m) and is published as an ISO international standard and adopted nationally/regionally (UNE / EN) for use in Europe/Spain.

Abstract

This part of ISO 12215 specifies the dimensions, local design pressures, material mechanical properties and design stresses used to determine scantlings for monohull small craft (recreational and small commercial/workboats) with hull or load-line length up to 24 m. It covers skin, framing, structural members and structural supports for openings (windows, hatches, doors) and gives methods to derive scantlings from calculated local pressures and stresses. The standard is not intended for craft designed solely for professional racing.

General information

• Status: Published (ISO international standard; adopted as UNE-EN ISO for national use).
• Publication date: ISO edition published May 2019 (national UNE-EN ISO publication/editions around Feb–Jul 2019/2020 depending on adopter).
• Publisher: Internationally published by ISO; adopted/published regionally/nationally by standardization bodies (example: AENOR / UNE for UNE-EN ISO versions).
• ICS / categories: 47.080 (Small craft); related ICS entries include hulls and structural elements.
• Edition / version: Edition 2 — ISO 12215-5:2019 (corrected/national versions and later editorial corrections exist).
• Number of pages: Approx. 126 pages (ISO published edition; pagination can vary between national/adopted documents and corrected versions).

Scope

The standard applies to monohull small craft, in intact condition, for recreational craft (including charter) and small commercial/workboats, with hull or load-line length up to 24 m. It establishes local design pressures and stresses and gives methods to determine scantlings for hulls and internal structural members built from common materials (fibre-reinforced plastics, aluminium and steel alloys, glued wood/plywood, and some non-reinforced plastics for very small craft). It is intended to be used together with other parts of the ISO 12215 series and with ISO 12217 for stability/freeboard considerations.

Key topics and requirements

• Definition of local design pressures for hull panels and structural zones (bow, midship, transom, bottom, topsides).
• Material mechanical properties and allowable design stresses used for scantlings determination.
• Methods to calculate scantlings from design pressures and stresses (prescriptive and calculation-based approaches).
• Application limits: monohulls up to 24 m; exclusions for professional racing craft; guidance for openings and attachments (windows, hatches, doors).
• Compatibility and references to other ISO 12215 parts (e.g., multihull pressures in Part 7; rudders, appendages, rig attachments in other parts).
• Informative annexes with application guidance and special cases (material-specific notes and small-craft exceptions).

Typical use and users

Naval architects, small-craft designers, boatbuilders and shipyards, classification societies, conformity assessment bodies, surveyors, regulatory authorities, and technical consultants use this standard to specify and verify hull scantlings, structural design, and to demonstrate compliance with recognized structural-design practice for small craft. It is also used by manufacturers preparing technical documentation for CE marking / regional compliance where EN/UNE adoptions apply.

Related standards

ISO 12215 is a multipart series; directly related parts include ISO 12215-1 through ISO 12215-10 (structure of small craft, materials, scantlings for multihulls, rudders, appendages, rig loads, etc.). The standard is intended to be used with ISO 12217 (stability, freeboard and buoyancy) and ISO 8666 (small craft — principal data). National/adopted variants exist as UNE-EN ISO and EN ISO documents.

Keywords

small craft, hull construction, scantlings, design pressures, design stresses, monohull, FRP, aluminium, steel, glued wood, ISO 12215, UNE-EN ISO, naval architecture

FAQ

Q: What is this standard?

A: It is Part 5 of the ISO 12215 series: an international standard that specifies local design pressures, material properties and design stresses used to determine the scantlings (structural dimensions) of monohull small craft.

Q: What does it cover?

A: It covers the calculation and prescription of local design pressures and stresses and methods to derive scantlings for hulls and internal structural members of monohull small craft up to 24 m (by hull or load-line length), including guidance for common materials and structural details such as openings and attachments.

Q: Who typically uses it?

A: Naval architects, designers, boatbuilders, manufacturers, surveyors, classification societies and regulatory bodies use it to design, verify and document hull scantlings for compliance and safe operation of small craft.

Q: Is it current or superseded?

A: The ISO edition is ISO 12215-5:2019 (Edition 2). National/adopted versions (UNE-EN ISO) were published around 2019 and later corrected/adapted editions (for example UNE-EN ISO 12215-5:2020 / corrected versions) have been issued by national bodies — users should check the relevant national adopter (AENOR/UNE or other national standards body) for the currently active national publication and any corrigenda.

Q: Is it part of a series?

A: Yes — ISO 12215 is a multipart standard for small craft hull construction and scantlings; Part 5 addresses monohull design pressures and scantlings determination while other parts cover topics such as multihulls, appendages, rudders and rig loads (e.g., Parts 7, 8, 9, 10).

Q: What are the key keywords?

A: small craft, hull scantlings, design pressure, design stress, monohull, FRP, aluminium, steel, glued wood, ISO 12215, UNE-EN ISO.