ISO 21319:2026

International
Standard
ISO 21319
First edition
Marine technology — Toolings
2026-04
for submersibles — Technology
requirements
Technologie maritime — Outillages pour les submersibles —
Exigences technologiques
Reference number
© ISO 2026
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Tooling classification . 2
5 General requirements . 2
5.1 Installation .2
5.2 Interface .2
5.2.1 Installation position .2
5.2.2 Electrical interface .2
5.2.3 Communication interface .3
5.2.4 Hydraulic interface .3
5.3 Dimensional .3
5.4 Function .4
5.4.1 General manipulator .4
5.4.2 Manipulator-held toolings . . .4
5.4.3 Portable operating toolings .5
5.4.4 Tooling deployment unit .5
6 Design requirements . 6
6.1 Design for pressure boundary .6
6.1.1 Design for internal external pressure .6
6.1.2 Oil-filled compensation structure .6
6.2 Seal design .7
6.3 Tool jettisoning functions .7
7 General testing . 7
7.1 Hydrostatic pressure test .7
7.1.1 Test content .7
7.1.2 Recommended test procedure .7
7.1.3 Functional test.8
7.1.4 Result evaluation .9
7.2 Equipment testing .9
7.3 Recommended operational test .9
Bibliography .10

iii
Foreword
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iv
Introduction
This document specifies the general requirements for toolings used with submersibles, including
requirements for their functionality, installation, interfaces, weight, and dimensions. It also covers tool
design requirements, general performance requirements, general testing and inspection methods. The
purpose of this document is to establish unified common requirements, thereby ensuring that the basic
requirements for toolings installed on submersibles are consistently maintained on a global scale.

v
International Standard ISO 21319:2026(en)
Marine technology — Toolings for submersibles —
Technology requirements
1 Scope
This document specifies the classification, general requirements, design requirements, general
characteristics, general testing and inspection methods for submersible toolings.
This document applies to the design, manufacture, inspection, and post-acceptance of submersible toolings.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
submersible
type of powered vessel that can travel or manoeuvre underwater, or both
3.2
tooling
types of devices, equipment and combinations of tools involved in underwater sampling, rescue, scientific
experiments and special operations carried out on a submersible (3.1)
3.3
manipulator
device having one or more degrees of freedom for grasping or carrying objects or toolings by remote control
or by a fixed procedure
Note 1 to entry: The maximum working depth is expressed in metres.
3.4
maximum working pressure
p
maximum pressure in which a system (pressure vessel, supporting controls, and instrumentation) is
operated
3.5
test pressure
p
t
specified amount of pressure applied during a test of a submersible’s structural integrity

4 Tooling classification
It is recommended that toolings used with submersibles be classified into the following categories based on
their application purposes:
a) general manipulator;
b) manipulator-held toolings;
c) portable operating toolings;
d) tool deployment unit.
5 General requirements
5.1 Installation
1)
The following installation requirements for toolings of human-occupied submersibles shall apply.
a) The manipulator shall generally be installed on the bottom frame structure at the forward part of the
bow. It shall be arranged within the field of view of personnel in the human-occupied cabin, or mounted
at a position equipped with a camera.
b) Other toolings shall be centrally installed on the sampling basket; this arrangement shall facilitate
monitoring and operation by personnel.
c) The manipulator for non-human-occupied submersibles shall generally be installed on the bow frame
structure.
d) Other toolings for non-human-occupied submersibles shall be installed within the range of video
surveillance; generally, no dedicated sampling basket is required.
5.2 Interface
5.2.1 Installation position
The following installation position requirements for toolings of human-occupied submersibles shall apply.
a) The connection interface between the toolings and the human-occupied submersible shall reserve
sufficient operating space to facilitate routine maintenance and disassembly operations.
b) When the metal materials of the installation contact surfaces between the toolings and the human-
occupied submersible are inconsistent, isolation measures shall be adopted to mitigate electrochemical
corrosion.
c) During installation of the toolings, fasteners shall be equipped with necessary anti-loosening measures.
d) For vibration-generating toolings, vibration isolation measures shall be considered at their connection
positions; additionally, the reliability of the connections shall be enhanced to prevent slippage.
5.2.2 Electrical interface
The following electrical interface requirements for toolings of human-occupied submersibles shall apply.
a) The toolings shall ensure that their electrical interfaces are compatible with those of the human-
occupied submersible.
1) This document uses the inclusive terms "human-occupied submersible" and "non-human-occupied submersible" in
place of the terms "manned submersible" and "unmanned submersible".

b) The watertight electrical connecto
...