Diving assurance
Independent auditing and operational assurance aligned with the Diving at Work Regulations, approved codes of practice and recognised industry guidance.
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Commercial & DefenceAuditing SolutionsStart a conversation
Independent assurance for high-risk operations
Clarity where
failure is not an option.
Independent auditing, technical assurance and operational insight for the commercial diving, defence, marine and infrastructure sectors.
Audit · Assurance · Compliance
IndependentClear judgement without compromise
ExperiencedBuilt on operational leadership
DefensibleEvidence-led, practical assurance
The CDAS difference
“We do not audit from the sidelines. We understand the operation, challenge the gap between documented systems and real-world performance, and leave organisations stronger than we found them.”
Steve Marrufo Founder & Principal Consultant
What we do
Assurance with
operational depth.
Specialist support shaped around the risk, the operation and the outcome—not a generic checklist.
Management systems
Practical assessment and development of systems that work in the real world — not only on paper.
Explore service ↗Incident investigation
Clear, evidence-led investigation of high-risk events, with defensible findings and recommendations that prevent recurrence.
Explore service ↗Technical authority
Independent technical leadership, client representation and competent oversight for complex marine and defence operations.
Explore service ↗Where we work
Specialist knowledge.
Broad application.
CDAS works where operational complexity, regulatory scrutiny and consequence meet.
Commercial diving
Assurance built around how diving projects are actually planned, controlled and delivered.
Defence & government
Discreet, credible support for organisations operating within demanding assurance environments.
Marine & offshore
Independent eyes on complex, high-consequence work where clarity and competence matter.
Infrastructure
Operational assurance bridging the gap between contractor systems and site reality.
Leadership that
doesn't shout.
Independent by design
Technical authority.
Human judgement.
CDAS was founded by Steve Marrufo to bring senior operational experience and uncompromised independent judgement directly to the organisations that need it.
From Superintendent of Diving across UK and European defence operations to independent technical authority, auditor and investigator, Steve's work is grounded in one belief: assurance must improve the operation—not simply satisfy the process.
Chartered Quality ProfessionalLead AuditorTOP-SET InvestigatorADC Associate Member
Meet Steve and CDAS →Professional standing
Recognised.
Registered.
Accountable.
CDAS combines independent judgement with recognised professional standing across quality, defence supply-chain assurance and the commercial-diving industry.
CQI · IRCA
Chartered Quality Professional and qualified lead-auditor capability.
JOSCAR registered
Registered within the defence and aerospace supplier-assurance community.
ADC associate member
Active professional engagement with the UK commercial-diving industry.
Trusted in demanding environments
What respected
professionals say.
Independent testimony from people who understand the standard, the operation and what credible assurance must deliver.
I asked Steve to write the operational foreword to Diving Crew Resource Management because he is one of the few people who can speak with authority to both the audit standard and the dive deck. Three decades in commercial and defence diving, Chartered Quality Professional and Lead Auditor, working across ISO 9001, ISO 45001, the Diving at Work Regulations and MOD, IMCA and ADC frameworks — he holds the technical authority and the systems view at the same time. His judgement that incidents rarely stem from a single technical failure, but from breakdowns in coordination and shared understanding, matches what the evidence consistently shows, and it is why his audits surface gaps before they become incidents. He does not soften findings to keep a client comfortable, and he does not consult from theory. When assurance has to stand up to a regulator, a client or a board, Steve is who I would call.
Thinking below the surface
Insight shaped by
real operations.
The human diver belongs at the centre of assurance.
Discuss the subject →Closing the distance between procedure and performance.
Discuss the subject →Coming soon
Below the Surface®
A different expression of the world we work in. Original, limited-run CDAS apparel inspired by commercial diving and life below the waterline.
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Need clarity on a
complex operation?
Tell us what you are facing. We will respond directly, discreetly and without unnecessary complication.
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