Your Entire Boat Life,
in One APP.
Managing a yacht has never been easier. Whether you own a sailboat or motor-vessel, private yacht or run a fleet, a small runabout or a super yacht, the C-Shel Yacht Management System streamlines your maintenance, enhances safety, and boosts productivity all from one intuitive platform.
All-in-One System: Track maintenance, projects, equipment, documents, provisioning, voyage logs, and much more, all in one personal boat brain knowledge base.
Built in Notion: Flexible, accessible from any device.
Offline: Create and edit data while you are offshore without an internet connection.
Made by Cruisers: Designed from real-life experience living aboard and maintaining a yacht.
Easy to Customize & Expand: Start fast, adapt it to your vessel’s unique needs and your personal touch.
“Get it. It just prompts you on all the things that you need to do, and it educates you along the way. It’s a great app. Any boater should have it. It’s a great resource.”
Jon Taffer
Host & Executive Producer of Bar Rescue, BoaterSTOP MANAGING CHAOS, START ENJOYING YOUR BOAT
Owning a boat should feel like freedom, not another job you can’t clock out of.
Without a solid system, you risk:
Forgetting crucial maintenance that leads to costly breakdowns
Losing track of gear, spares, and documents when you need them most
Feeling overwhelmed by disorganization
C-Shel Yacht Management System takes the mental load off your shoulders, letting you focus on what you actually bought the boat for; the adventures, the sunsets, and the open water.
📚 BUILD YOUR BOAT’S BRAIN
EVERYTHING YOU KNOW ABOUT YOUR YACHT, YOUR BOAT LIFE, & THE PLACES YOU CRUISE, IN ONE PLACE.
Owning a boat means managing hundreds of details: equipment manuals, service notes, spare parts, best anchorages, checklists. Without a system, all that knowledge stays scattered, or worse, gets lost when you need it most.
With C-Shel YMS, you create a living, searchable knowledge base for your yacht:
Vessel Knowledge Base: Record your boat’s quirks, troubleshooting steps, lessons learned, random thoughts, embed web clips or YouTube videos, essentially anything and everything that deals with the boat, boat life, and the places you cruise. Build a searchable indexed reference that saves time (and headaches) later.
Vessel Documentation Library: Store manuals, wiring diagrams, receipts, warranties, specifications, and all critical boat paperwork including officially issued documentation. Never wonder where you saved that PDF again..
Personal Cruising Guide: Save favorite anchorages, marinas, fuel stops, provisioning locations, and local notes in your Vessel Knowledge Base and curate them into your personal guide based on location and categorize by Weather, Points of Interest, Navigation, Anchorages,, etc. and keep them updated as you go and learn more.
🛠 Keep Your Boat Alive with Smarter Maintenance
Prevent breakdowns. Extend the life of your systems. Cruise with confidence.
Maintenance is the #1 reason boats lose time, money, and reliability. C-Shel Yacht Management System gives you a complete vessel maintenance hub that helps you stay ahead of issues, not behind them.
With CSYMS, you can:
Schedule recurring maintenance on equipment, by the service intervals of time past, hours on equipment, and fuel consumption
Get reminded when service is due based on any service interval via the Service Due Inbox
Log completed maintenance work with notes, invoices, and photos, all in a convenient, organized, and searchable maintenance log
Track your onboard inventory so you always know what spares you have, what equipment they belong to, and where they’re stored
No more guessing. No more missed or late oil changes. Just confidence in your vessel and your system.
🧭 Stay on Top of Every Boat Project
From big refits to small fixes, C-Shel YMS keeps you organized and moving forward.
Boats always have a project and task list, sometimes it’s in your head, sometimes it’s scribbled on a napkin. C-Shel YMS turns that chaos into a structured, visual system that makes it easy to track, plan, share, collaborate, and actually finish the work.
Inside the Project Management module, you’ll get:
Kanban Board View – Organize projects by status: Backlog, Planning, In Progress, Paused, or Done
Task Boards – GTD-style task system (Now, Next, Soon, Later, Someday/Maybe) so you never lose track
Timeline View – Visualize your refit schedule across weeks or months with drag-and-drop timelines
Filter by Context & Difficulty – Tackle what you can, where you are: Onboard, at home, online, or at the store
Connect to Maintenance – Push maintenance items directly into project tasks with one click
Auto-link Logs – Completed tasks can feed into your Maintenance or Refit logs without duplicate entry
Whether you’re planning a full yard period or just need to remember to fix that dinghy leak, this is where the work gets done.
“I don’t hold anything in my head anymore. It all goes into the task board, and then it gets done.”
⚓︎ Keep a Complete History of Your Voyages and Vessel Status
The Captain’s Log — your boat’s Trip memory, linked to your safety checks.
Every passage tells a story, and with C-Shel YMS, you’ll have every detail documented, searchable, and connected to the rest of your yacht’s data.
The Captain’s Log lets you
record departure/arrival details, engine hours, weather, fuel, crew, notes, and any other data pertinent to the trip.
Attach photos, documents, and embed your tracker web data from Garmin inReach or apps like Sea People, for a rich trip history
Link directly to mechanical sanity checks, engine room checks, and voyage safety checks so you know your vessel was shipshape before and during the trip
Plan trips in
advance
with future-dated entries and voyage timelines
See every voyage on a timeline or table view for quick reference
🔍 Why the Engine Room Check Relationship Matters
During a trip, you can run formal engine room checks, recording temperatures, pressures, fluid levels, and other readings.
These ER checks
are linked to the specific Captain’s Log entry for that voyage
Flag anomalies that may need follow-up in Project Management or Vessel Maintenance
Create a measurable trend over time, so you spot small issues before they become big ones
Every upgrade, and key detail — organized and connected
Vessel Logs
don’t just help you plan and document your voyage history, it preserves your vessel’s story. The Logs also captures everything from fuel and water, to the upgrades and refits you’ve made along the way, and links it seamlessly to the rest of your system.
The Upgrade/Refit Log
Track non-scheduled work like system upgrades, cosmetic improvements, and one-off fixes
Keep before-and-after photos, invoices, and notes in one place
Link each upgrade to the related tasks in Project Management so the history is complete
See costs by category and monitor how long upgrades last over time
✅ Checklists: Never Miss a Step
Linked to your voyages or ready to use anytime — fully customizable.
The right checklist can be the difference between smooth sailing and an avoidable problem. CSYMS gives you both voyage-linked checklists that connect directly to your Captain’s Log and standalone checklists you can use whenever you need them.
🔗 Voyage-Linked Checklists
Mechanical Sanity Checks — Pre-departure system checks before & after you start the engine
Open Water Voyage Pre-Departure — Offshore prep, stowage, and safety verification
Engine Room Checks — Underway inspections with recorded temps, pressures, and system readings
📋 Standalone Checklists
Available anytime from your Vessel Knowledge Base — perfect for seasonal and safety routines:
Hurricane Preparedness
Summer/Winter Storage
In-Storage Inspections
Safety Equipment Inspections
Even a Float Plan Template for sharing your voyage details with family or authorities
Create as many as you need for your unique vessel and operations
🛠 Fully Customizable
Edit any preloaded checklist to fit your boat’s systems and procedures
Add new checklists from scratch — they’ll appear automatically in the right place
Remove what you don’t use, reorder steps, or add notes and photos
🛒 Provisioning: Always Have What You Need Onboard
From weeks-long voyages to weekend trips — plan, track, and shop with precision.
Running out of critical supplies mid-cruise can ruin a trip. C-Shel YMS takes the guesswork out of provisioning with a smart, trip-based planning system that calculates exactly what you need, when you need it.
🌍 Plan by Trip
Create a provisioning plan tied to each voyage, with the trip’s start date and duration
Get automatic quantity calculations for each item based on usage per week and weeks remaining
Handle perishables differently; set maximum storage weeks so you only stock what will stay fresh
Track What You Have, See What’s Missing
Maintain a running stock on hand for every consumable
Track both perishable and non-perishable items, plus household supplies, toiletries, and galley essentials
Manage by category (beverages, canned goods, dry goods, household, etc.) or by storage location on the vessel
🛍 Auto-Generated Shopping Lists
Get a real-time shopping list that updates as you shop, remove items simply by adjusting stock on hand
Filter by shopping location so you know exactly what to get at each stop
with parts inventory to manage maintenance spares and consumables alongside food and supplies
🛠 Fully Customizable
Add or remove categories
Adjust units of measure and storage locations to match your boat
Build trip templates for recurring voyages to speed up planning
⚖️ C-Shel YMS vs Everything
There are a few ways boaters try to stay organized: spreadsheets, free apps like YachtWave, subscription platforms like Vessel Vanguard, or high-end commercial tools. Here’s how C-Shel YMS stacks up.
| Feature | C-Shel YMS | Vessel Vanguard | YachtWave | Others | Spreadsheets / DIY |
|---|---|---|---|---|---|
| Maintenance Scheduling | Flexible by time, hours, fuel + Service Due Inbox | Comprehensive scheduling & reminders | Reminders available | Strong, compliance-driven (fleet-focused) | Manual entry only |
| Project Management | GTD Kanban + Timeline views | Not included | Not included | Limited, maintenance-focused | None |
| Knowledge Base & Docs | Searchable, manuals, vessel info, cruising notes | Primarily manuals & service records | Minimal document storage | Robust libraries, structured | Files scattered |
| Captain’s Log | Voyages + Engine Room Checks + timelines | Not included | Logbook functionality | Available, but secondary | Manual notes |
| Engine Room Checks | Detailed, logged, comparative, and linked | Not included | Not included | Occasionally supported | Paper or DIY only |
| Refit & Upgrade Log | Track upgrades, costs, lifespan | Not included | Not included | Available in some systems | Manual only |
| Provisioning & Shopping Lists | Trip-based planning + auto lists | Not included | Not included | Not typically offered | Manual calculation |
| Checklists | Preloaded + customizable, sharable Float Plans | Predefined checklists | Limited options | Structured, less flexible | Manual effort |
| Parts & Inventory | Linked to maintenance & equipment | Inventory support | Basic inventory | Advanced inventory tools | Hard to manage |
| Offline Mode | Yes | Yes | Yes | Varies by platform | Depends on setup |
| Multi-Device Support | Desktop, tablet, phone w/ sync across devices | App + web | Mobile app | Typically enterprise-focused | Limited |
| Customization & Ownership | Fully editable, customizable, personalizable, + user owns data | Structured, vendor-managed | Data under app license | Limited customization, vendor-controlled | Yours, but disorganized |
| Cost | One-time purchase | Subscription ($300–$500+/yr) | Free (with trade-offs) | High enterprise pricing | Free (but high effort) |
| Community & Support | Dedicated community portal + support | Direct support, no community | No community portal | No community portal | None |
📢 With CSYMS you get it all; maintenance, projects, logs, checklists, provisioning, inventory, customization, and full data ownership; for a one-time cost.
Trusted by Experienced Cruisers
From seasoned boaters to liveaboards, C-Shel Yacht Management System is helping owners stay organized, save time, and enjoy the journey.
“We have been boating for 25 years and currently on our third vessel, a Carver 440 with twin diesel engines. Over the years we have looked at a few different Yacht Management Systems to aid in our maintenance scheduling, parts inventory, provisioning and voyage logs. Most of what we found was either expensive or complicated and not very user friendly or customizable. Therefore, we continued to use spreadsheets, paper manuals and multiple different apps to track our voyages and maintenance.
But now our good friend Sheldon Regular introduced us to his C-Shel Yacht Management System. This is an easily affordable solution to all-in-one management of maintenance schedules and logging, parts, voyage logging, document handling and provisioning. Not only does CSYMS track all this, but proactively reminds you of maintenance tasks, parts inventory required and a shopping list for your provisions based on your upcoming voyage parameters.
I have found the true benefit of CSYMS is the access it provides through the Notion Platform. Not only does it sync between all your devices, but the sync is through all operating systems such as iOS, Android and Windows based computers. This is something my old spreadsheets, Apple Books and Notepad lacked. I can now enter data on the helm iPad while travelling and everything is instantly updated on the Windows laptop and other phones/devices.
CSYMS has been a true game changer for us, and we highly recommend this system if you are looking for a method that tracks and anticipates your vessel management needs.
And many thanks to Sheldon for taking his years of boating experience into a management system that solves the challenges of maintaining our Vessels.”
“Sheldon worked with me constantly back and forth on IM until he identified what I did wrong and had me going in no time. Excellent support! Excellent app! And best part? No recurring monthly fees to use it!!! Just get it. Great job Sheldon Regular and THANK YOU!”
“We pulled the trigger. Starting to add stuff and get used to the layout but so far very intuitive and infinitely customizable.”
“I’m planning my winter trip to Florida/Bahamas and this app is exactly what I need. Well worth the wait!”
“I am deep into the maintenance and scheduling side of the app as I am doing refit/maint. work on our new to us boat before heading to Florida this winter from Tennessee... Great work on the Graphics... I love the flexibility to add content on the notion platform to any page for service schedule items like pictures of stuff or products I am using on the task/project/service item, etc. Good work Sheldon”
“Downloaded it. I already had Notion but this template is absolutely worth it. What a great tool”
“This is the most exciting thing to happen to boating/cruiser lifestyle since the diesel engine.”
“I recently downloaded the new C-Shel Yacht Maintenance app and it’s been a game changer for us. C-Shel Yacht Maintenance has completely transformed the way I manage our boat. It’s truly an all-in-one solution that covers every aspect of maintenance and operations — and then some.
From scheduling routine tasks to tracking inventory, expenses, and provisioning, everything is at my fingertips. The app is intuitive, reliable, and incredibly thorough. It gives me total peace of mind knowing nothing gets overlooked.
C-Shel Yacht Maintenance doesn’t just meet your needs — it anticipates them. I can’t imagine managing my vessel without it! Highly recommend, and if you know C-Shel then you know that they know boats and our needs!
Thanks Sheldon for building this, it’s exactly what we’ve been searching for.”
Don’t Want to Do Any Setup?
We’ll SETUP & configure C-Shel YMS for you, customized to your boat.
Not everyone wants to dive into data entry. That’s why we offer a Setup & Customization Service. We’ll work with you to load your vessel’s manuals, maintenance schedules, and historical logs, directly into C-Shel YMS — tailored to your boat and cruising style.
When we’re done, you’ll log in and find a system already personalized and ready to go.
Frequently Asked Questions
The only limits on the free plan are: • A 5 MB per-file upload cap (you can still upload manuals, photos, and documents — larger files can be stored in cloud storage like Google Drive and linked). • Charting and graph features are not included on the free plan, but all logs, schedules, and lists still work perfectly.
Some users choose to upgrade to a paid Notion plan if they want unlimited uploads, charts, or advanced collaboration features, but this is completely optional. For most boaters, the free plan is more than enough.
Notion gives you full export options at any time, including: • Export your entire workspace to HTML, Markdown, or CSV. • Export databases like logs and inventories to CSV for use in Excel or Google Sheets. • Export PDFs of specific logs or reports for offline archiving.
This means you are never locked in — you can always download, back up, and move your information as you wish. Your boat’s history stays with you, not with us or any third-party vendor.
Buy C-Shel Yacht Management System
No fuss, no monthly fees. C-Shel Yacht Management System is a one-time purchase, which also gets you lifetime access to tutorials and our support community.
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$99.99
One Time Payment
✅ All C-Shel Yacht Management Features
✅ Tutorials and Documentation
✅ Access to the exclusive support community