ISO 16315-2016 (2021) PDF

Full title and description

ISO 16315:2016 — Small craft — Electric propulsion system. This International Standard specifies requirements for the design and installation of alternating-current (AC) and direct-current (DC) electrical systems used for electric and hybrid propulsion in small craft (hull length up to 24 m). It includes limits of applicability by voltage and covers systems with rechargeable batteries and fuelled power sources.

Abstract

ISO 16315:2016 provides requirements and guidance for electrical propulsion and hybrid propulsion power systems installed in small craft. It addresses both AC and DC systems, defines applicable voltage ranges (DC less than 1 500 V, single‑phase and three‑phase AC up to 1 000 V) and sets out safety, installation and integration considerations for propulsion machinery, power distribution, batteries and associated electrical equipment for craft up to 24 m hull length. The published text has a corrected version dated November 2021.

General information

• Status: Withdrawn (Edition 1, 2016); new edition/version recorded as ISO 16315:2026 on ISO lifecycle information.
• Publication date: 16 March 2016 (corrected version: November 2021).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 47.080 (Small craft). National/adopted versions (EN/DIN) also list related ICS codes for electrical equipment of ships (for example 47.020.60 in some national translations).
• Edition / version: Edition 1 (2016); corrected version released November 2021; ISO lifecycle information shows a subsequent ISO 16315:2026 entry.
• Number of pages: 25 pages in the ISO International Standard edition; national/adopted publications (EN/DIN/BS translations) report higher page counts (typically 36–40 pages) due to national forewords and combined texts.

Scope

Applies to the design and installation of AC and DC electrical systems intended for propulsion and hybrid propulsion of small craft up to 24 m hull length (LH according to ISO 8666). The standard is applicable to systems operating individually or in combination within the following electrical ranges: direct current less than 1 500 V DC; single‑phase AC up to 1 000 V; three‑phase AC up to 1 000 V. It is focused on safe, reliable integration of propulsion electrical systems, including battery systems used in hybrid configurations.

Key topics and requirements

• Design and installation requirements for electric propulsion systems (AC and DC) on small craft.
• Voltage and system applicability limits (DC < 1 500 V; AC up to 1 000 V single‑ and three‑phase).
• Requirements for hybrid systems combining batteries and fuelled power sources (integration and safety).
• Protection, switching, distribution and control arrangements appropriate to propulsion duties (including overcurrent and earthing/grounding considerations).
• Considerations for battery installation, charging, cabling and ventilation (where applicable), and interfaces with other craft electrical systems.
• Cross‑references and normative links to marine and explosion‑protection standards used where hazardous atmospheres or special equipment protection levels are relevant.

Typical use and users

Used by small craft designers and naval architects, boatbuilders and manufacturers of electric propulsion equipment, system integrators, shipyards, certification bodies, surveyors and regulatory authorities responsible for recreational and small commercial craft. The standard is referenced by national/adopted versions (EN/DIN/BS) when aligning electric propulsion installations with regional regulatory and conformity assessment schemes.

Related standards

ISO 16315:2016 references or is used alongside several maritime and electrical standards, including (but not limited to) IEC 60079‑26 (equipment protection level), IEC 60945 (maritime navigation and radiocommunication equipment — general requirements), ISO 10133 (small craft — electrical systems — extra‑low‑voltage DC installations), IEC 60079‑17, IEC 60079‑10‑1 and ISO 10239 (LPG systems on small craft). National/adopted EN versions are used for harmonization in the EU context.

Keywords

small craft; electric propulsion; hybrid propulsion; marine electrical systems; batteries; DC systems; AC systems; installation; ISO 16315.

FAQ

Q: What is this standard?

A: ISO 16315:2016 is an international standard titled "Small craft — Electric propulsion system" that sets requirements for the design and installation of electrical propulsion and hybrid propulsion systems on small craft (up to 24 m hull length).

Q: What does it cover?

A: It covers AC and DC propulsion systems (DC < 1 500 V; AC up to 1 000 V single‑ and three‑phase), requirements for integration of rechargeable batteries with fuelled power sources (hybrid), and related safety and installation provisions for small craft propulsion electrical systems.

Q: Who typically uses it?

A: Designers, boatbuilders, propulsion system manufacturers, system integrators, surveyors, conformity assessment bodies and regulators for recreational and small commercial craft commonly use the standard to specify and assess electric propulsion installations.

Q: Is it current or superseded?

A: The 2016 edition (corrected November 2021) is recorded as Withdrawn on the ISO lifecycle page and ISO indicates a new version entry ISO 16315:2026; users should confirm the applicable edition for their jurisdiction and use the most recent issued/revised text when specifying or certifying installations.

Q: Is it part of a series?

A: It is part of the family of small craft and marine electrical standards (for example ISO 8666 for hull length definitions, ISO 10133 for extra‑low‑voltage DC systems) and is commonly published/adopted alongside EN/DIN/BS national or regional versions for harmonized regulatory application.

Q: What are the key keywords?

A: Small craft, electric propulsion, hybrid propulsion, batteries, marine electrical installation, DC/AC voltage limits, ISO 16315.