Nemo Marine Group LLC

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Nemo Marine Group LLC At Nemo Marine Group, we specialize in maritime services. Raising the industry standard for commercial diving and marine construction projects.

Our utmost priority is to deliver safe and high-quality solutions.

The floats keep rolling in, and our crew keeps knocking these projects out!We've been staying busy breathing new life in...
11/04/2026

The floats keep rolling in, and our crew keeps knocking these projects out!

We've been staying busy breathing new life into boathouses throughout the Puget Sound, and we're not slowing down anytime soon.

From removing old, deteriorating Styrofoam to installing new flotation, releveling, and tackling structural repairs, boathouses are becoming a big part of what we do here at Nemo Marine Group. And we've got one heck of a crew making it all happen.

Whether your boathouse needs a complete refloat, some overdue maintenance, or just a professional set of eyes on it, give us a call. We're always happy to talk shop and help you figure out the best way forward.

Proudly serving boathouse owners throughout Washington State.

At Nemo Marine Group, your boathouse is our business. We'll keep you afloat.

Send us a message to discuss your project or get on our schedule!

Apparently we are, in fact, a 5-star operation. Even our vendors are starting to leave reviews. ⭐️⭐️⭐️⭐️⭐️Another 48' bo...
09/24/2026

Apparently we are, in fact, a 5-star operation. Even our vendors are starting to leave reviews. ⭐️⭐️⭐️⭐️⭐️

Another 48' boathouse flotation replacement is getting close to the finish line.

23 new floats installed. 7 to go.

Our crew has been steadily removing the old flotation and installing new encapsulated units from the water, one section at a time, using our commercial diving team and custom ballast system to get the job done without jacking the boathouse up or bringing in a crane.

It’s dirty work. It’s wet work. And lately, we’ve gotten pretty damn good at it.

If your boathouse is still sitting on deteriorated, exposed, or aging flotation, now is a good time to start planning ahead.

Nemo Marine Group LLC
Commercial Diving • Marine Construction • Boathouse Flotation Replacement

📩 Message us to schedule a site visit or request an estimate.

Another boathouse brought back to life. ⚓️From deteriorating exposed Styrofoam to a completely new flotation system, our...
09/15/2026

Another boathouse brought back to life. ⚓️

From deteriorating exposed Styrofoam to a completely new flotation system, our commercial dive team completed this full boathouse re-float in just 4.5 days.

For this project, Nemo Marine Group removed the existing deteriorating foam flotation from beneath the boathouse and installed 36 new encapsulated floats, all while working from the water and keeping the structure in place.

No crane. No hauling the boathouse out. No major disruption.

Just a commercial dive crew, the right equipment, and a lot of work underwater.

The difference speaks for itself.

Beyond restoring the boathouse’s flotation and stability, projects like this solve another major problem: old exposed Styrofoam doesn’t belong in our waterways. As it deteriorates, it breaks apart and becomes increasingly difficult to contain and remove.

Replacing aging foam with modern encapsulated flotation helps clean up our waterways, provides a long-term flotation solution, and helps boathouse owners meet newer Port flotation requirements.

We’re proud of what our crew accomplished on this one, 36 new floats and a complete re-float in 4.5 days. And we already have several more boathouse projects lined up behind it.

Need your boathouse re-floated?

Our schedule is filling quickly. If your flotation is deteriorating, your boathouse is sitting low, or you need to start planning for updated flotation requirements, now is the time to get on the schedule.

📞 (406) 600-7264
🌐 www.nemomarinegroup.com

Nemo Marine Group LLC
Commercial Diving & Marine Construction

From inspection to installation - we work where the problem

BOATHOUSE OWNERS, STILL FLOATING ON EXPOSED FOAM? If so, now’s a good time to start making a plan.Marinas and Ports arou...
08/18/2026

BOATHOUSE OWNERS, STILL FLOATING ON EXPOSED FOAM?

If so, now’s a good time to start making a plan.

Marinas and Ports around Puget Sound have been sending notices to boathouse owners about removing old, unencapsulated flotation foam and replacing it with modern encapsulated floats.

That’s where we come in.

At Nemo Marine Group, we specialize in commercial diving and marine construction projects like this. Our crew can remove deteriorated foam, dispose of it properly, and install new encapsulated dock floats while working directly from the water and minimizing disruption to the boathouse and surrounding environment.

We handle:

• Foam removal & disposal
• Encapsulated float installation
• Underwater flotation replacement
• Buoyancy & float planning
• Structural repairs & underwater inspections
• Commercial diving & marine construction

These projects are usually a little more involved than simply “swapping out a few floats.” Every boathouse is different, and access, structure, existing flotation, marina rules, and underwater conditions all play a part.

That’s the kind of work our crew is built for.

Most boathouse flotation replacements can be completed in roughly 4–6 working days, depending on the size and conditions of the project.

📅 Our 2026 schedule is filling up quickly.

If you’ve received a notice from your marina or Port, or you already know the foam under your boathouse has seen better days, reach out early and we’ll help you put together a plan before it becomes a last-minute problem.

📍 Serving Puget Sound and waterfront clients throughout Washington.

NEMO MARINE GROUP LLC
Commercial Diving • Marine Construction • Consulting

Built for the jobs water makes difficult.

“Dock surgery” complete.For this project, the NMG crew removed and replaced 24 feet of the center section of this existi...
05/13/2026

“Dock surgery” complete.

For this project, the NMG crew removed and replaced 24 feet of the center section of this existing floating dock system after the original concrete float sections began failing and slowly taking on water. The existing dock had served its time, but the aging concrete sections had become too heavy, damaged, and unreliable for long-term service.

Rather than pushing for a full replacement, we worked with the client to develop a more surgical repair approach that preserved the surrounding structure while completely rebuilding the failed center span.

The repair included: • Removal and disposal of (4) deteriorated concrete float sections
• Installation of new marine-grade framing and structural components
• New encapsulated dock floats for improved buoyancy and freeboard
• New decking and trim integration to match the existing dock system
• Installation of solar dock lights for improved nighttime visibility and aesthetics

The end result is a cleaner, safer, lighter, and more functional dock system, while saving the client significant cost compared to a full rebuild.

One of the things we take pride in at Nemo Marine Group is finding practical solutions that actually make sense for the client and the structure. Sometimes the right answer is not tearing everything out and starting over. Sometimes it is precision work, good planning, and a little dock surgery.

Big thank you again to this returning client for continuing to put their trust in our team.

First dock rebuild for this client in the books.We removed over 40,000 lbs of existing concrete dock and installed the n...
04/04/2026

First dock rebuild for this client in the books.

We removed over 40,000 lbs of existing concrete dock and installed the new floating dock system in the same day. We came back on day two to finish cleat installation, final sanding, and a full wash down.

What made this one go smoothly was the work that happened before we ever got on site. We spent three full days off-site prefabricating the dock sections so install day would be efficient, controlled, and straightforward once everything hit the water.

This was a fast-moving project, but not a rushed one. From controlled demo to final hardware install, every step was planned, sequenced, and executed exactly as intended; leaving a finished product that came together the way it was supposed to.

Proud of the crew on this one. Everybody showed up, did their part, and got it done right.

The end result is a solid new dock that looks good, functions right, and should serve this client well for a long time.

If you have an aging dock, failing float system, or a waterfront structure that needs real attention, we’d be glad to take a look.

Luxury Waterfront Upgrades Done Right.Your dock isn’t just a structure; it’s part of your home, your lifestyle, and your...
02/20/2026

Luxury Waterfront Upgrades Done Right.

Your dock isn’t just a structure; it’s part of your home, your lifestyle, and your investment. When it starts showing its age, patch jobs won’t cut it. You need a crew that understands marine construction, diving, and long-term durability.

At Nemo Marine Group, we specialize in high-end dock restoration and rebuilds designed to look incredible and perform for decades in harsh marine environments.

What we do: • Full dock restoration & rebuilds
• Pile repair and pile replacement
• Premium decking upgrades
• Custom accessories & finishing touches
• Float upgrades & buoyancy corrections
• Ladders, cleats, lighting, fenders, and more

We focus on clean craftsmanship, safe ex*****on, and long-term performance - not quick fixes.
If your waterfront deserves better, let’s talk.

📍 Serving Seattle, Lake Washington, San Juan Islands & surrounding waters
📩 Message us to schedule a site visit or consultation

PNW Dock Rebuild — Before & After ✅This dock was failing fast (rot, damage, unsafe access). The client had to place heav...
02/04/2026

PNW Dock Rebuild — Before & After ✅
This dock was failing fast (rot, damage, unsafe access). The client had to place heavy rocks on it to stop the dock from floating away in each storm. We rebuilt it in 3 day and turned it into a stable, clean, functional platform that’s ready for real waterfront use again.

Nemo Marine Group LLC provides:

Dock & marina repair / rebuilds

Piledriving and pile repair

Boathouse/houseboat work

Float repair, leveling, and conversions

Underwater inspections & commercial dive support

Hull cleaning, zincs, & anodes

If you’ve got a dock that’s turning into a liability, we’ll give you a straight answer and a clear plan.

DM us here to schedule a site visit.
Licensed • Bonded • Insured

Boathouse Float Conversion CompleteTwenty-seven new dock floats installed.Five days total, with only three days in the w...
01/22/2026

Boathouse Float Conversion Complete

Twenty-seven new dock floats installed.
Five days total, with only three days in the water.

This week, the NMG dive team executed a full foam-to-float conversion safely, efficiently, by the book, and in record time. Day one was MOBE and site setup. Day five was DEMOBE, with all removed foam hauled off and properly disposed of.

From detailed surveys and methodical planning to controlled underwater operations, this project was executed using proven techniques and a custom-engineered ballast system purpose-built for this scope of work. Nemo Marine Group has a proven track record of delivering these projects safely, cleanly, and without surprises.

The result: • 27 engineered dock floats installed
• Over 1,200 cubic feet of polluting foam removed
• Structure brought into full compliance with DNR and marina regulations
• No environmental release, no drama, no guesswork

Washington State DNR is mandating the removal of exposed and encapsulated foam to prevent long-term pollution of our waterways. The clock is ticking, and fines begin in roughly 18 months. Delays will only make these projects more complicated and more expensive.

If your boathouse or dock still relies on foam, now is the time to act.

We are actively taking on additional foam-removal and float-conversion projects.

Reach out today for a free consultation and to schedule a survey.

Built right.
Done safely.
Executed with purpose.

Day 4:  Completion & CloseoutDay 4 was the final push, and the point where everything came together.We completed all rem...
01/14/2026

Day 4: Completion & Closeout

Day 4 was the final push, and the point where everything came together.

We completed all remaining framing, secured all decking, installed and finished the fascia and trim, and installed all dock accessories, including a new step for easy access. With structure, finish work, and hardware in place, the dock is now fully functional and ready for long-term use.

NMG tested and Approved!

This dock was originally built over 5 decades ago by a member of the client’s family. To honor that history, our crew took the initiative to salvage select original lumber and repurpose it into a commemorative bench, along with a new deck board that bridges the old structure with the new; preserving a tangible connection between generations.

We wrapped the day with a full site cleanup and preparation for demobilization.

Proud work by a solid crew, executed in one of the most demanding locations, and built to last.

Address

PO BOX 821054, Kenmore Terrace
Kenmore Terrace, WA
98028

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