Dealer Management System — DMS — is a phrase that travelled across from the automotive trade and landed in marine almost unchanged. Stripped of jargon, a marine DMS is one piece of software that runs your service workshop, your parts counter, and (sometimes) your boat sales, with all three sharing customer, vehicle, and financial data.
If your yard currently runs separate systems for jobs, stock, online parts sales, and accounting — and the data has to be re-keyed between them — a DMS is what fixes that. Here's how to evaluate one without getting lost in vendor jargon.
What a Marine DMS Actually Does
Three core modules: Service (job cards, scheduling, labour tracking, invoicing), Parts (catalogue, stock levels, supplier pricing, online sales), and CRM (customer history, boat records, communications). A full DMS adds a Sales module for new and used boats; a workshop-focused DMS skips it.
The point of integrating these is single-source-of-truth data. When an engineer fits a part to a boat, the stock count drops, the part lands on the invoice, and the service history record updates — all without anyone re-typing anything.
Why UK Yards Are Adopting DMS Now
Three trends are driving it. First, parts margins matter more than ever as labour costs rise — yards need real visibility on what's actually profitable. Second, customers expect online parts ordering, which means your physical stock and your website need to talk to each other. Third, BSS and insurance audits increasingly demand traceable service history, which a DMS produces as a one-click PDF.
The cost of a modern DMS has also dropped dramatically. What used to require a £15,000 Kerridge-style installation is now £199/month cloud software.
The Five Questions to Ask Any DMS Vendor
1. Does it integrate with Shopify or WooCommerce? Most UK yards already have a website. Replacing it shouldn't be a condition of buying a DMS.
2. How does it handle UK VAT — particularly margin-scheme brokerage? Many international DMS products treat VAT as a US sales-tax variant. They cope, but barely.
3. Is pricing flat or per-job? Per-job pricing punishes growth. Flat pricing is almost always better value above 30 jobs/month.
4. Can I export everything? Your data should be yours. Test the export before you sign.
5. Where is the support team based? UK-based support that understands BSS, MCA codes, and the British marine trade is worth a lot.
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When You Don't Need a Full DMS
If you're a pure-service yard with no parts retail and no boat sales, a workshop management system (Marina Yard Manager Workshop at £79/month) does everything you need without the DMS overhead.
Add parts retail or online sales, and the DMS tier earns its keep within the first quarter.
Frequently Asked Questions
What's the difference between a DMS and workshop software?
Workshop software handles jobs, scheduling, and invoicing. A DMS adds parts retail, online sales sync, and dealer-grade reporting on top of that.
How long does DMS implementation take?
Cloud DMS products like Marina Yard Manager are live within a week. Legacy on-premise systems can take three months or more.
Do I need a DMS if I use Xero?
Xero is accounting software, not operations software. A DMS runs the day-to-day work and pushes summaries to Xero. You typically need both.
Written by
Hamish Lowry-Martin
Founder & Lead Developer
With 30 years in IT and 20 years developing business systems, Hamish spent the last decade working closely with marinas and boat yards — watching first-hand how they struggle with outdated tools. That hands-on observation led to Marina Yard Manager.
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