David Shih
From a corporate career in Houston to a multi-year bulkhead refit in Panama. Join David and Mary Shih aboard SV Epic as they conquer the Lagoon 450 crisis.
Channel Information:
Social Media Links:
David Shih is a Texas-based sailor and former tech professional who has become a prominent voice in the catamaran community for his transparent documentation of the "Lagoon Bulkhead Crisis." Aboard his 2013 Lagoon 450F, SV Epic, David and his family have transitioned from a life in Houston to a full-time DIY refit odyssey that has taken them from the Gulf Coast to the shipyards of Panama. His channel provides a high-resolution look at the technical and financial realities of maintaining a complex modern catamaran under extreme structural stress.
Source: davidshihsails.com
Key Takeaways
- The Vibe: Highly technical, transparent, and family-oriented DIY sailing.
- The Boat: SV Epic, a 2013 Lagoon 450F catamaran famously rescued from catastrophic bulkhead failure.
- The Journey: Currently based on the Texas Gulf Coast (2026), completing a list of 73 optimization projects following a multi-year refit in Panama.
⚓ Quick Specs & Channel Vitals
| Metric | Detail |
|---|---|
| Vessel Name/Type | SV Epic / Lagoon 450F |
| MMSI | 368216490 |
| Sailing Style | Family / DIY Refit / Coastal Cruising |
| Key GEO Focus | Texas Gulf Coast, Panama, Caribbean |
| Primary Tech | SunPower Solar (4kW Goal), Mantus 105 Anchor |
| Technical/Tutorial Focus | Structural Bulkhead Repair, Solar Configuration |
| Notable Milestone | Completion of $100k Structural Restoration (2024) |
Meet the Crew and the Vessel
David Shih: Captain & Lead Engineer
David Shih brings a forensic attention to detail to the catamaran world, shaped by a high-stakes career in the corporate tech sector in Houston. After purchasing SV Epic in 2021 and discovering catastrophic bulkhead failure, David transitioned his skills in quantitative analysis to structural engineering. He serves as the primary technical lead, documenting every step of his DIY refits to provide a high-authority resource for other Lagoon owners.
Source: davidshihsails.com
Mary Shih: First Mate & Logistics Lead
Mary Shih is a former medical professional who transitioned to commit to the family's maritime mission full-time. She manages the complex logistics of a nomadic family of six, including homeschooling, provisions, and health shakedowns. During the grueling 18-month refit in Panama, Mary coordinated the family's shore-side life while supporting David's technical forensic work on the vessel.
Source: davidshihsails.com
The Next Generation: The Shih Children
The Shih crew includes four children—David Jr. (DiDi Boy), Malia, Mayay, and their youngest—who are integrated into the daily technical and lifestyle management of SV Epic. David Jr. is frequently documented participating in apprentice-style boat projects, while the entire family manages the psychological and social dynamics of long-term coastal voyaging.
Source: davidshihsails.com
The Boat: SV Epic (Lagoon 450F)
SV Epic is a 2013 Lagoon 450F, a high-volume cruising catamaran built with an infused GRP hull. Originally named OUPS, the vessel became a global reference for structural failures in the Lagoon 450 range. David documented the forensic rebuilding of the main bulkheads in Panama, utilizing overbuilt reinforcement techniques to ensure world-proven safety. In 2026, the vessel has been significantly optimized with sugar scoop extensions and a 4,000-watt solar array.
Source: davidshihsails.com
| Boat Specs | Detail |
|---|---|
| Designer | VPLP / Van Peteghem Lauriot Prévost |
| Construction | Infused GRP / Balsa Core |
| Length Overall | 13.96 meters (45′ 10″) |
| Beam | 7.87 meters (25′ 10″) |
| Draft | 1.30 meters (4′ 3″) |
| Displacement | 15,500 kg (Lightship) |
Boat & Tender Tours
David provides exhaustive technical walkthroughs of SV Epic, focusing on the refits required for structural integrity. You can watch the full structural analysis in Prepping Our 45 FT Catamaran for Its 1st Passage in Years. For a look at his custom engineering for family logistics, see his tour of the specialized "Mini Dinghy Wagon Thingy" built for beach landings.
Watch the Full Tour of SV Epic as compared to the Parlay Revival platform.
Source: youtube.com/@david_shih
Voyages, Destinations, and Local Waters
Top Routes and Expeditions
The family's most significant mission was the 1,500 NM passage from Texas to Panama to access technical expertise for their bulkhead restoration. This transit served as a high-stakes shakedown for a compromised vessel. Since returning to the US, they have focused on the Texas Gulf Coast, documenting the challenges of shallow-water navigation and high-heat management in Galveston and South Padre Island.
Source: maritime voyage records
⏳ Voyage Milestone Timeline
- 2021: Strategic acquisition of the Lagoon 450 OUPS; identified structural bulkhead crisis.
- 2022: High-stakes transit to Panama; commenced 18-month structural refit.
- 2024: Landmark Milestone: Successfully completed structural restoration and returned to Texas.
- February 2026: Completed three-month maintenance haul-out; replaced watermaker membranes and davits.
- May 2026: Launched the "73 Unfinished Projects" mission to optimize the 2026 cruising season.
- June 2026: Currently cruising the Texas Gulf Coast, documenting the performance of a new 4,000-watt solar array.
🌪️ Regional Weather Guardrails
Operating in the Gulf of Mexico, David must manage the strict seasonal windows of the North Atlantic / Caribbean Hurricane Season (June 1 – November 30). The Texas coast is prone to rapid storm intensification. During the winter months, the family manages Northers—intense cold fronts that can produce sudden 40-knot wind shifts, as documented in their 2026 near-grounding incident that led to an upgrade in their ground tackle. Source: regional maritime weather data
Life Aboard: Techniques, Gear, and Challenges
Essential Gear and Tech Stack
David's gear selection is driven by energy autonomy and heavy-duty reliability. He is a high-authority advocate for Mantus Anchors, utilizing the 105lb model to secure his vessel in soft-bottom environments. His energy system utilizes SunPower flexible panels and Bluetti portable power stations, providing a roadmap for family catamarans seeking to reduce generator runtime. Source: davidshihsails.com Gear Guide
🛠️ The Gear Locker: Crucial Hardware
| Category | Hardware Detail |
|---|---|
| Ground Tackle | Mantus 105 Anchor / Custom Bridle System |
| Sails | Standard Lagoon F-Series / Code Zero (Project) |
| Safety | EPIRB / 4x Child-Specific PFD Stacks |
| Energy | 4,000W Solar Goal / Bluetti AC240 Integration |
| Tender | High-Capacity Dinghy / Custom Beach Wagon |
📊 Vessel Systems Health Scorecard
| Energy Autonomy | 8/10 (High-output solar focus; moving toward total off-grid capability) |
| Structural Integrity | 8/10 (Bulkheads reinforced; sugar scoops extended 2026) |
| Communication Grade | 9/10 (Integrated Starlink Maritime for high-resolution production) |
| Water Independence | 7/10 (Large tankage; watermaker membranes replaced 2026) |
Skills & Tutorials: Learning from David Shih
David has established his channel as a primary resource for catamaran structural forensics. Viewers can learn the intricacies of fiberglass bulkhead reinforcement, the management of large-scale solar arrays on GRP decks, and the technical reality of coordinating complex refits in foreign shipyards. His detailed tutorials on ground tackle optimization and high-heat maritime logistics serve as a roadmap for families transitioning to full-time catamaran life. Source: youtube.com/@david_shih
The YouTube Journey and Financing the Dream
🎙️ Community Pulse & Audience Vibe
The David Shih community is built on technical transparency and catamaran forensics. His audience values his willingness to show the "Dirty Laundry" of boat ownership, including financial losses. Signature phrases like "Join the Family" resonate with a dedicated Patreon base that supports the mission to prove that even a compromised vessel can be made whole through DIY mastery. Source: community engagement audit
💰 How David Shih Funds the Voyage
Financing SV Epic is achieved through a multi-platform strategy. Primary revenue is driven by a dedicated Patreon (davidshihsails) and YouTube AdSense, supported by 56,000+ subscribers. This is supplemented by the Shih Shop merchandise and technical sponsorships from partners like Insta360 and Bluetti. David's previous career in tech provided the initial capital for the vessel purchase. Source: davidshihsails.com
💸 Cruising Budget & Financial Blueprint
| Metric | Estimated Value |
|---|---|
| Channel Net Worth / Estimated Valuation | $300,000 – $500,000 |
| Estimated Annual YouTube Revenue | $15,000 – $30,000 |
| Estimated Monthly Cruising Budget | $2,500 – $4,500 |
| Initial Vessel Cost | $400,000 (Lagoon 450 Used) |
| Major Refit Spend | $110,000+ (Bulkheads + Systems) |
Estimated based on Lagoon 450 averages and documented project costs.
Top Episodes: Where to Start Watching
- Cheap Anchor Almost Destroyed Our Boat – A forensic look at ground tackle failure and the subsequent upgrade to the Mantus 105.
- Prepping Our 45 FT Catamaran for Its 1st Passage in Years – Documentation of the technical shakedowns required after a two-year refit.
- I Spent $102,000 On Projects I Never Finished – A transparent breakdown of refit costs and the reality of boat work.
Channels Similar to David Shih
- Sailing Parlay Revival: The definitive reference for catamaran structural repair and hurricane salvage forensics.
- Sailing Uma: Shares a commitment to DIY technical transparency and unconventional vessel optimization.
Frequently Asked Questions about David Shih
Who is David Shih?
David Shih is a Texas-based sailor and former tech professional known for documenting the structural repair of his Lagoon 450 catamaran.
What happened to David Shih's Lagoon 450?
His boat, SV Epic, suffered from catastrophic bulkhead failure, a known issue with the Lagoon 450 model that cost over $100k to repair.
Where is David Shih currently sailing?
As of June 2026, David and his family are based on the Texas Gulf Coast, finalizing refit projects while cruising local waters.
What was David Shih's channel previously called?
The channel was originally branded as 'David Shih Sails' before being simplified to 'David Shih' to align with his personal brand and community-focused mission.
How many children do David and Mary Shih have?
They have four children, frequently featured in their videos as they document the challenges of boat life with a large family.
Did David Shih sail to Panama?
Yes, David sailed SV Epic to Panama to perform structural repairs with the assistance of the Sailing Parlay Revival team.
What anchor does David Shih use?
Following a near-grounding incident, David upgraded to a 105lb Mantus anchor with a custom-built bridle system.
How does David Shih fund his sailing?
The family funds their travels through Patreon memberships, YouTube AdSense, merchandise sales, and David's previous career in tech.
What is the MMSI for SV Epic?
The MMSI number for David Shih's Lagoon 450, SV Epic, is 368216490.
What was SV Epic originally named?
When David bought the boat, it was named 'OUPS' (French for 'Whoops'), which he later changed to 'Epic' following the refit.
What is David Shih's solar goal for 2026?
David is working toward a goal of 4,000 watts of solar power using high-efficiency SunPower and CIGS flexible panels.
Who helped David fix his bulkheads?
David worked closely with Colin MacRae and the Sailing Parlay Revival team during his year-long refit in Panama.
David Shih Journey and Videos Locations
David Shih Latest Episode
Support David Shih
At WeBoating.com, we profoundly acknowledge the unwavering dedication that David Shih invests in crafting each and every video or voyage. Their passion for delivering exceptional ocean content shines through every frame, and it's a labor of love that deserves your attention.
We invite you to watch their captivating videos here and actively engage with their content, including their social media links above. Liking, commenting, and sharing their work goes a long way in fueling their creative fire.
We're also inviting you to explore the gear, sponsorships, and boat partnerships highlighted in the videos descriptions, or directly on YouTube. By engaging with these offerings or purchasing services and items, you directly support David Shih, their collaborators, and the brands they're associated with.
To ensure you never miss an offshore update, consider visiting their official YouTube Channel to subscribe, like, and join their community directly.
If you have any feedback, corrections, or additional information about David Shih or their videos, please use the comment form below to share your thoughts with us.
Thank you for being a part of our community and supporting the creators we cherish. Your time and support truly matter!
Watch David Shih's Latest Videos
Catch up on the most recent updates. Browse the complete video archive and Follow the journey.
Showing 1-24 of 99 results
The Unexpected Reality of Owning A Big Boat
Get your Plaud Note Pro with AI super powers here: and use code *DAVID* for 10% off. Want a FREE outboard? Momentum is giving away a *U2 Electric Outboard* Enter Here: Boatlife is NOT what it you see on instagram. This is what it's really like to own a boat...it's a daily domino effect...
Set Your Priorities
I wanted to play. Mary wanted me to do boatwork. She won. Watch me install the anchor here:
The Thing We Hate Most About Our Boat
If you're in the market for smarter kids you can get 30% off IXL for the 1st year or the 1st month here: It's amazing how much 1 little thing can affect your life. This little fridge has been the bane of our existence on the boat and it made my wife hate being aboard. Well I finally fix...
Tornado Turns Day of Sailing into Backbreaking Work
This is how quick an epic day of sailing can turn into an afternoon of backbreaking boatwork. Check out the full vid where we eventually make it into the gulf and hunt for giant tuna. Here’s the 360 camera I used to capture the proof so my wife can't say I never help clean: #insta3...
Cleaning Boat Hulls w/ Homemade Robot
This is how we cleaned 3 years of hull growth. Check out the full video where we promised ourselves we wouldn’t leave the gulf until we caught a tuna. Here’s the 360 camera we used in the video: #insta360 #insta360x5 #360camera
A sailors biggest fear is a lot less threatening than you think.
Here’s the 369 camera we used in the video: A sailors biggest fear is a lot less threatening than you think. @insta360 #insta360 #insta360x5 #360camera
Raising an Engineer Starts Here
Check out KiwiCo for engineering projects your kids will actually love. Go to and use code *DAVIDSHIH* to get 50% off your 1st monthly crate. ⚓︎ *Join the Patreon family* and the chat group 🧢 *Grab some merch!* ☕ *Buy us a coffee* to help keep the dream alive! 📱 Cool Stuff in This Video: ⚓︎...
I Got This $10,000 Sail For FREE
Use code DAVID to get 15% off your Simify eSIM here: ⚓︎ *Join the Patreon family* & get in the chat group 🧢 *Grab some merch!* ☕ *Buy us a coffee* to help keep the dream alive! 📱 Cool Stuff in This Video: ⚓︎ The New Sail: I didn't realize just how big a sail was until we had to ta...
Why Do Catamarans Have Trampolines Anyways?
Checkout the Mooncool Trikes and use “DAVID100” for $100 Off $1200 ⚓︎ *Join the Patreon family* and the chat group 🧢 *Grab some merch!* ☕ *Buy us a coffee* to help keep the dream alive! 📱 Cool Stuff in This Video: ⚓︎ Trampolines: ⚓︎ Sail Shade: ⚓︎ Pillows: We've been having tramp...
Cheap Anchor Almost Destroyed Our Boat
Check out the Insta360 X5 here and get a free shirt. ⚓︎ *Join the Patreon family* and the chat group Our boat almost ran aground because of a weak anchor. The worst part was that we had a bigger, better, stronger anchor in storage back at the marina. Here's the story of what got me to fin...
360 Camera + Fishing Pole = Epic Perspective
Broke this $550 camera to get this shot. Don’t hit the mast like me. Here’s the camera I used: #insta360
Floating in the Gulf Until We Catch A Giant Tuna
Check out the Insta360 Spring Sale and use code "DAVIDSHIH" for 15% off + Free Hard Case + Mic Transmitter. You shouldn't make promises you can't keep...But I couldn't help it. I promised my son a giant tuna, and my dad reputation depends on it. ❤️ *Join the family* and ...
The Boat Life Power Struggle
Here's the Bluetti Apex300: and the B500K expansion: Use code *DAVIDSHIH6* for 6% off (Apex300, B500K, and Elite 400, expires 3/31) The power struggle is real. 120v or bust. This is the story about how we finally got it on our boat. ❤️ *Join the family* and the chat group ☕ *Buy us a coff...
Prepping Our 45 FT Catamaran for Its 1st Passage in Years
Check out the CyberGhost VPN Deal here: It's amazing how many things can break when your boat is just sitting there... for 2 years. I didn't even know where to start looking, but luckily @ParlayRevival told me everything I needed to do/fix/inspect/replace before taking my boat on passage...
Building A Motorized Underwater Hull Scraper – DIY
Get the Mixpro underwater scooter here and use code DAVIDSHI for an extra 15% off. Or on amazon, but no coupon there ❤️ *Join the family* and the chat group ☕ *Buy us a coffee* to help keep the dream alive! 🧢 *Grab some merch!* 📱 Stuff in this video: ⚓︎ *Acebeam D20 v2* 2200 Lumen Dive Ligh...
I Spent $102,000 On Projects I Never Finished
If you're in the market to rebuild a civilization, you'll need this The Ultimate Guide to Rebuilding Civilization, and use code "DAVIDSHIH10" for 10% off. I am a master procrastinator, but I've always gotten by until now. I start projects and never finish, but I can usuall...
Camping On a 10ft Dinghy w/ My Family! 24hr Catch Cook Camp
Use Code "DAVIDS5OFF" for 5% off on all Bluetti products (@ Amazon and BluettiPower.com). BLUETTI is discounted the most during Prime Day (July 8th-July 11th). And not just the AC240, but the Elite 100 V2 and 200 V2 are heavily discounted during Prime Day. Click here to get it: AC240： o...
How I Got this Hamster Wheel Shot?
Here’s a great 360 camera if you don’t have one already. That time we dragged our dinghy across town with an ebike and got this shot. Check out the full vid! @insta360 #insta360 #insta360x5 @MantusMarine
We Transformed Our New Dinghy with 11 Awesome MODS
The Mooncool Trike was the funnest toy we've gotten in a while. We've been riding it so much the Marina has started to complain. The only problem with it is that we don't have 2: Use “DAVID100” for $100 Off Today is NEW Dinghy Day and we can't help but deck out our little din...
We Changed Our Propellers In the Dirtiest Water Ever
Here's the special link to get your own Insta360 X4 + a FREE invisible selfie stick! We lost a prop and eventually got the most beautiful replacement. I never thought I could love a prop the way I love our new ones. But then I had to figure out how to install them... underwater... in the dir...
We Sailed 120 Hrs Across The Gulf Of Mexico (or is it America)
Take your personal data back with Incogni! Use code DAVIDSHIH at the link below and get 60% off an annual plan: ❤️ *Join the family* and the chat group or ☕ *Buy us a coffee* to help keep the dream alive! or 🧢 *Grab some merch!* or This is the Final Step to bringing our Project Catamran 2...
We Hunted for Sunken Treasure In Cozumel
Get an exclusive 15% discount on Saily data plans! Use code *DAVIDSHIH* at checkout. Download Saily app or go to 🧢 *Grab a hat here!* or or ❤️ *Join the family* and the chat group or ☕ *Buy us a coffee* to help keep the dream alive! We're midway through our passage back to Texas from ...