About Us
Naval Architecture and Engineering you can trust.
Experience you can count on.
Welcome to TM Marine Services — your trusted partner for naval architecture and marine engineering, run by folks who know that boats, docks, and seawalls rarely care what your calendar says.
How it all started
1. Sealy Technical Services
Sealy Technical Services built a strong reputation over nearly a decade for solid naval architecture and marine engineering — the kind of practical, no-nonsense work that keeps vessels balanced, drydocks certified, and ship yards running.
Led by a marine engineering veteran with over 20 years in the trenches, Sealy earned the respect of shipyards, operators, and maritime history buffs alike.
2. Tideman Marine
3. TM Marine Services is born
When Tideman Marine joined forces with Sealy, it wasn’t to reinvent the wheel — it was to bolt on more horsepower and broaden what we can do for owners and operators everywhere.
The result? TM Marine Services:
Same proven engineers and naval architects, same trusted approach, now backed by boatbuilders who know how every line on a drawing translates to real life on deck.
What We Do (And Do Well)
If it floats, hauls, supports, or has seen more storms than most sailors — we can help. Our team designs, analyzes, checks, and solves so you can focus on the part you actually need to do: getting the job done on the water.
Naval Architecture
Hull shapes that cut through waves, not budgets.
Dry Dock & Shipyard Support
Docking plans, structural checks, and load calcs that keep the yard crew happy (and you off the hook for delays).
Marine Engineering
Structures and systems that hold up when the sea doesn’t feel like cooperating.
Forensic Engineering
Calm, clear explanations when something goes bump, bend, or why did that happen?
Laser Scanning & Digitizing
Because “measure twice, weld once” works better with millions of points of data.
Historical Vessel Engineering
Blending respect for tradition with discreet modern muscle.
How We Work
- Experienced brains, field-tested hands. The same Sealy team you’ve trusted for years, now with Tideman Marine grit in our back pocket.
- Practical answers — zero fluff. We love clean reports, neat drawings, and solutions your crew actually understands.
- Fast responses, real talk. We don’t ghost our clients, and we won’t hide behind jargon if something needs fixing.
- A bit of humor. Because the ocean is unpredictable enough — your engineers shouldn’t be.
Why Clients Stay with Us
Our track record didn’t happen by chance — it’s hundreds of vessels docked, refits finished, inspections passed, and historic hulls given new life without losing their old soul.
Our clients stick with us because we make the complicated parts clear, the stressful parts calm, and the final result solid enough to face the next squall (or inspector).
TM Marine Services
Rooted in Sealy’s proven expertise. Boosted by Tideman Marine’s practical boatbuilding sense. Committed to keeping your fleet, yard, or classic ship shipshape — with engineering you can trust and people you actually like talking to.
Real people. Real expertise. No nautical nonsense.
The Crew Behind the Calculations
Tim Greeson, P.E.
Marine Engineer, President
John (Johnny) Mather
Design Engineer
Jess Al-Khalifah, A.A.S.
Naval and Architectural Drafter
George Cares, M.E.T., MBA
Jr. Marine Engineer
Let’s Get Started
Big plan? Tough refit? A historic vessel with more character than your Uncle Joe?
Call us. Let’s get your project sorted — and maybe share a laugh or two along the way.