TS 88-25 ISO 128-25

TS 88-25 ISO 128-25 is a part of the ISO 128 series that sets out application rules and basic conventions for lines used on shipbuilding drawings. Standards of this kind establish a common graphical language so that technical drawings can be read consistently across organisations and disciplines; in this case, the focus is on what line types mean and how they are organised in shipbuilding documentation.

Why line conventions matter in shipbuilding drawings

In technical drawing, lines are the primary visual tool for distinguishing visible edges, hidden detail, axes, section indications, dimension auxiliaries and explanatory information. Shipbuilding drawings are especially demanding because they may combine hull geometry, outfit arrangement and complex fabrication details. This standard addresses the basic rules for applying line types in that context, helping the same drawing remain intelligible to designers, production teams and other readers.

Its place within the ISO 128 family

This document belongs to the ISO 128 family of general principles for presentation in technical drawings, with a specific part devoted to shipbuilding. The family approach separates topics such as lines, lettering, dimensioning and representation into coordinated parts, creating a drawing language that is consistent yet adaptable to different fields. The scope given for this listing is centred on the basic application principles for line types in shipbuilding drawings, not on every aspect of technical drawing practice.

• Defines the purpose and use logic of line types.
• Focuses on shipbuilding-specific drawing presentation.
• Supports readability and consistency in technical drawings.
• Is a shipbuilding-oriented part of the ISO 128 series.