Equipment decision guide
Available is not the same as suitable.
Five checks before committing to marine equipment. This original decision framework is general guidance; project-specific engineering, inspection and commercial checks remain necessary.
- 01
Mission and outcome
Define the work and acceptance criteria before discussing an asset: material, quantity, geometry, working depth and programme.
- 02
Site, ground and access
Check the evidence for ground conditions, water depths, access, environmental limits and operating conditions. Keep confirmed facts and assumptions separate.
- 03
The whole production chain
Consider excavation, handling or transport, placement and support as one system. A capable main unit can still be constrained by another part of the spread.
- 04
Total campaign cost
Compare mobilisation, support craft, fuel, crew, operating restrictions, maintenance, standby and demobilisation alongside purchase or hire price. State the assumptions and sensitivity.
- 05
Verification and mandate
Verify unit-specific particulars, condition, relevant certificates, location and availability with the responsible parties. Confirm ownership or authority to represent before a transaction.
Start by recording the requirement, the evidence available, the unresolved assumption and who will verify it. An equipment profile or broker offer alone does not establish suitability, ownership or availability.
Download the decision guide (PDF, English)
Further reading
The framework above is an original commercial decision aid. These professional references explain how equipment choice, dredging methods and material classification relate; the PIANC link is a public publication overview.
Published 22 October 2026.