How a $12,000 Welding Mistake Changed Our Inspection Process at Damen
The email that made my stomach drop
It was a Thursday afternoon in March 2022. I was reviewing the weekly progress report for a Damen Stan Pontoon 8011 build when the QC manager walked over. He didn’t say a word – just handed me a printout of the NDT results. Eleven of the sixteen fillet welds on the deck substructure had failed. The repair estimate: $12,000 and a two-week delay.
That was the moment I realized we had a process gap – a gap I’d helped create.
Backstory: how we got here
Earlier that year, we’d taken on a rush order for a client in the offshore wind sector. The spec called for full-penetration welds on all load-bearing joints, but somewhere between the sales handover and the workshop floor, that requirement got lost. Our production team followed the standard Damen modular welding procedure – which is excellent for typical barge construction – but not suited for the fatigue-critical design of this particular pontoon.
I remember talking to the lead engineer the day before cutting started. He asked, “Are we sure about the weld classification?” I shrugged it off. “It’s a standard 8011 – we’ve built dozens.” (Should mention: the client had attached a supplementary specification sheet, which I hadn’t forwarded to the workshop. That’s on me.)
The assumption that cost us
Here’s the thing – and this is the causation reversal I see all the time in this industry: people think rushed projects fail because the work is harder. Actually, they fail because the information flow breaks down. The work itself is no more difficult; it’s the coordination that gets sloppy. We assumed our standard procedure would suffice, but the real cause of the failure was our lack of a formal contract review handoff process.
The fallout
We reworked the welds. The team worked overtime for nine days. The client, understandably, was not happy. We absorbed the cost, of course – $12,000 in rework plus the delay penalty we negotiated down to $3,000 by offering a discount on the next order. But the real damage was credibility. I still remember the client’s procurement manager saying, “We chose Damen because we expected no surprises.”
Looking back, I should have caught it. The spec sheet had a note in bold: “All load-bearing welds per IACS UR W23.” I saw it, nodded, and moved on. I didn’t think to verify that our workshop had the latest version of that standard. (Turns out, the edition we were working from was two revisions behind.)
What we changed
After that project, I created a pre-production checklist that now lives in our project management system. It’s not fancy – just eight questions:
- Has the contract spec been compared to the production drawing?
- Are all referenced standards current editions?
- Has the lead welder reviewed the NDT requirements before cutting?
- Is there a documented handover from sales to production?
- …and a few others specific to Damen’s modular builds.
That checklist caught fourteen potential issues in the next six months. One of them would have been a similar weld failure. We saved roughly $40,000 in avoided rework – but more importantly, we kept our clients’ trust.
A personal lesson on customer education
I’d rather spend 30 minutes explaining weld classifications to a client upfront than deal with mismatched expectations later. An informed client asks better questions – they spot inconsistencies, they check their own specs. In my opinion, that’s the sign of a good partnership. We now send all new offshore clients a one-page summary titled “What Damen Will Verify Before Production”. It’s not about being defensive; it’s about making sure we’re both looking at the same blueprint.
The takeaway
If you’re ordering a bespoke vessel or marine equipment, ask your builder how they handle spec handoffs. Do they have a formal checklist? Who verifies that the engineer’s design matches the client’s contract? If the answer is vague, that’s a red flag. (Take this with a grain of salt: larger yards like Damen have robust systems, but I’ve seen mistakes at every level. The process is only as good as the person following it.)
That $12,000 mistake taught me that process gaps are silent until they bite you. We fixed ours. I hope this story helps you think about yours.