Prepared to the standard required by classification societies and commercial certification.
Stability Booklet
Stability documentation prepared to the standard your classification society or authority requires.

Overview
A stability booklet documents how a vessel behaves under different loading conditions and is a standard requirement for classed and commercial vessels, and increasingly requested for larger private yachts as well.
We coordinate naval architects to prepare or update stability documentation, working from existing vessel data where available or from fresh measurement and calculation where it is not.
Benefits
Coordinated alongside naval architecture and technical drawings work.
Supports vessels where a booklet needs updating after modification.
Clear explanation of findings, not just a technical document handed over unexplained.
Our process
- 01
Requirement confirmation
We confirm which classification society or authority standard the stability booklet needs to meet.
- 02
Data collection
Existing vessel data is gathered, or a fresh inclining test or measurement is arranged where needed.
- 03
Booklet preparation
Stability calculations and the booklet document are prepared by a qualified naval architect.
- 04
Submission and sign-off
The completed booklet is submitted for classification society or authority approval.
Required documents
- Existing stability data or previous booklet, if available
- General arrangement and structural drawings
- Details of any modifications affecting weight distribution since the last booklet
Frequently asked questions
Does every vessel need a stability booklet?+
Not every vessel does, but commercial, classed, and larger vessels commonly require one. We confirm the requirement from the vessel type, use, and authority route.
Does a refit require a new stability booklet?+
A refit can require an update if it changes weight, layout, structure, machinery, or operating limits. We review the scope before advising.
What is an inclining test?+
An inclining test measures how a vessel responds to controlled weight shifts so the naval architect can calculate lightship and stability data.
Related services
Naval architecture
Technical naval architecture support for modifications, refits, and new-build projects.
Technical drawings
General arrangement, structural, and systems drawings for registration, class, or refit purposes.
Classification services
Coordination with classification societies for surveys, certification, and compliance.
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