ISO 129-4:2013

INTERNATIONAL ISO
STANDARD 129-4
First edition
2013-07-01
Technical product documentation
(TPD) — Indication of dimensions
and tolerances —
Part 4:
Dimensioning of shipbuilding drawings
Documentation technique de produits (TPD) — Indication des cotes
et tolérances —
Partie 4: Cotes des dessins de construction navale
Reference number
©
ISO 2013
© ISO 2013
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ii © ISO 2013 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 General principles . 1
4 Basic requirements . 1
4.1 General . 1
4.2 Dimension lines . 2
4.3 Extension lines . 2
4.4 Types of dimensions indication. 4
4.5 Dimensions of plates and profiles . 6
Foreword
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The committee responsible for this document is ISO/TC 10, Technical product documentation,
Subcommittee SC 6, Mechanical engineering documentation.
ISO 129 consists of the following parts, under the general title Technical product documentation (TPD) —
Indication of dimensions and tolerances:
— Part 1: General principles
— Part 2: Dimensioning of mechanical engineering drawings
— Part 3: Architectural
— Part 4: Dimensioning of shipbuilding drawings
iv © ISO 2013 – All rights reserved

INTERNATIONAL STANDARD ISO 129-4:2013(E)
Technical product documentation (TPD) — Indication of
dimensions and tolerances —
Part 4:
Dimensioning of shipbuilding drawings
1 Scope
This part of ISO 129 specifies the dimensioning for general use on metal hulls on shipbuilding drawings.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 128-25, Technical drawings — General principles of presentation — Part 25: Lines on shipbuilding drawings
1)
ISO 129-1:— , Technical drawings — Indication of dimensions and tolerances — Part 1: General principles
3 General principles
General principles of dimensioning are as follows.
a) The basic types of lines, their designations, as well as general rules for draughting of lines, are
specified in ISO 128-25.
b) The rule of indication of dimension and tolerances are specified in ISO 129-1.
c) The location dimension of the hull structure shall be indicated with the distance of the assembled
moulded line of the member from reference line (BL = base line, CL = centre line, AP = after
perpendicular, FP = forward perpendicular, WL = water line).
d) The dimensions of the same member(s) shall be indicated only once; the dimensions of the members
with identical specifications and sizes shall be indicated only once; these dimensions should be on
the view(s) of the drawing that displays the member(s) most clearly.
4 Basic requirements
4.1 General
Dimensions indicating the location of a structural member in the hull shall be referenced as follows.
...