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Dynamic Positioning Assurance

DP FMEA

Failure Modes and Effects Analysis of the Dynamic Positioning system
Normative anchor
IMCA M 166 Rev 3
Answers to
Company DP Authority
Charging unit
Project
Primary output
FMEA report + proving trials report

Establishes, by failure mode analysis across the whole DP system and by the proving trials that demonstrate it, whether the worst case failure found matches the worst case failure the design intended. Those two are different things, and the distance between them is the finding.

In scope

  • Failure mode and effects analysis across the whole DP system — power generation and distribution, thrusters and their control, the DP control system, position reference systems, sensors and the vessel management network.
  • Determination of the Worst Case Failure (WCF) and its comparison against the declared Worst Case Failure Design Intent (WCFDI), for every operational configuration.
  • Analysis structured over performance, protection and detection — the three elements of any redundancy-based fault-tolerant system.
  • Proving trials on board, demonstrating in practice what the analysis asserts on paper.
  • Revision of the FMEA against the trial results.

Not in scope

  • Engineering of the corrective action for findings raised. We identify and categorise; the remediation design belongs to the yard or the OEM.
  • Issue of capability plots. These are a naval architecture deliverable and we consume them rather than produce them.
  • Repair, adjustment or commissioning of equipment during attendance.

Declared so the conversation happens before the campaign, not in the middle of it.

Deliverables

What you receive

  1. FMEA report, structured to IMCA M 166 §2.4.1.
  2. Proving trials report, recording each test, its acceptance criterion and the observed result.
  3. Revised FMEA, incorporating what the trials established.
  4. Detailed Service Report — consultative, frank and confidential to the owner. Every finding also appears in the formal report; the difference is depth of advice, never suppression.
  5. Crew summary — what the analysis changed for the people who stand the watch.
Scoping

What drives the effort

These move the size of the campaign. None of them moves the standard it is measured against.

These drive effort, not price. Pricing is quoted after the specification call, together with the documents we will need from you.

Related scopes

What usually goes with it

DP Gap Analysis

Whether the DP documentation you hold is fit to rely on, and what it does not cover.

CAM / TAM / ASOG

Which configuration the vessel operates in, and when it must stop.

DP Annual Trials

Whether the vessel still holds the capability it demonstrated.

Next step

DP FMEA — let's scope it against your vessel.

Contact us Or email the technical team
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