Built by an Engineer · AI-Powered · For Engineers at Sea

Stop Guessing
What's On Board. Start Knowing.

MarineStock turns vessel inventory from a stack of dog-eared spreadsheets into a real-time, cloud-synced system the entire crew — and the office — can trust. Lube oils, chemicals, MSDS, consumption history, expiry alerts. One app. One source of truth.

See What It Does → Try It On Your Vessel
⚠
Low Stock Alert
Cylinder Oil 30L · 5 days left
✓
Synced
3 devices · Real-time
VESSEL DASHBOARD
Good day, Chief 👋
342
Items
18
Low
847L
S.Oil
156
Tx/Mo
SECTIONS
🛢
45
Lube
🧪
62
Chem
🛞
28
Grease
🎨
32
Paint
⚠ LOW STOCK ALERTS
Cylinder Oil 30L
📍 Engine Store · Castrol
45 L
Min: 100
Hydraulic Oil 68
📍 Workshop · Shell
120 L
Min: 200
Caustic Cleaner
📍 Chemical Store
8 L
Min: 25
11+
Inventory Sections
13
Built-in Engineering Tools
AI
Photo Recognition
24/7
Real-Time Cloud Sync
// The Old Way

Inventory shouldn't be
this painful.

If any of these sound familiar, you're not alone. Every vessel struggles with the same problems — and most "solutions" make it worse.

📋

Excel Files Everywhere

Spreadsheets passed around USB sticks. Three versions of "stock_final_v2.xlsx" floating around. Nobody knows which one is current.

⏰

Always Running Out

"How much cylinder oil do we have?" Cue 30 minutes of physical counting, only to discover you're already below minimum. Order placed in panic.

📄

MSDS Lost in Drawers

Inspector asks for the MSDS during audit. You spend 20 minutes digging through binders. Find one — but it's expired.

👁

Office Has No Visibility

The fleet manager wants to know what's onboard. You email a screenshot. By the time it arrives, the data is already stale.

🤷

"Who Used the Last One?"

No record of who took what, when, or why. Stock disappears between handovers. Disputes during port arrivals. No accountability.

📅

Expired Stock Discovered Too Late

Half the medicine cabinet is past expiry. Three drums of grease have been there since the previous chief. Money down the drain.

// What MarineStock Does

Everything you need.
Nothing you don't.

Built from years of real engine room experience. Every feature exists because someone, somewhere, needed it at 3 AM during a port call.

01
📦

Smart Inventory

Track every item across Lube, Chemicals, Grease, Paint, PPE, Medicine — plus unlimited custom sections you create yourself. Photos, MSDS, suppliers, part numbers, locations — all in one place.

UNLIMITED ITEMS
02
⚡

Real-Time Sync

The 3rd Engineer takes oil from the store. Two seconds later, the Chief sees the new quantity on his iPad. Office in HQ sees it on their dashboard. No emails. No delays.

CLOUD POWERED
03
📸

Photos & MSDS Built In

Snap a photo of every item. Upload the MSDS PDF directly. Full audit-ready document storage. When the inspector asks, tap once and show.

PDF + IMAGE
04
⚠

Smart Alerts

Low stock alerts before you run out. Expiry warnings 30/60/90 days ahead. Never get caught short. Never throw out expired stock you forgot about.

PROACTIVE
05
📊

Full Transaction Log

Every add and deduct logged with date, crew name, rank, and remarks. Complete audit trail. ROB reports in one tap. Snapshot history for end-of-month closeout.

AUDIT READY
06
📈

Fleet Analytics

For office staff: reorder forecasts, expiry pipeline, cross-vessel comparisons, dormant items, top consumers. Data-driven decisions, not guesswork.

SUPERADMIN
07
🌐

Works Offline

No connection at sea? No problem. The app keeps working — view stock, edit quantities, log transactions. Auto-syncs when connection returns.

PWA
08
📥

Excel Import / Export

Bring your existing spreadsheets in via Excel import. Export ROB reports as PDF or Excel anytime. Bulk update dozens of items in seconds.

NO LOCK-IN
09
🔧

Engineering Tools

13 built-in tools: calculator, unit converter, tank volume, fuel temp correction, SG/API converter, pipe volume, bolt torque, battery runtime, dilution, and more.

BONUS TOOLKIT
CASTROL
Hyspin AWH-M 46
208 L
✨
AI Identified
98% confidence
NameCastrol Hyspin AWH-M 46
SupplierCastrol
TypeHydraulic Oil
Container208 L Drum
✓ Add to Inventory
// AI Powered

Snap a photo.
Let AI do the typing.

Adding new items used to mean typing labels by hand — name, brand, type, container size. MarineStock changes that. Just take a photo of the drum, can, or label, and AI fills in the details for you.

  • 📸
    Photo Recognition
    Snap a photo of any oil drum, chemical container, or product label — AI reads it and identifies the product instantly.
  • ⚡
    Auto-Fill Item Details
    Brand, product name, type, and container volume populate automatically. Just review and save.
  • 🧠
    Powered by Claude
    Built on Anthropic's Claude — one of the world's most capable AI models. Recognizes thousands of marine products and brands.
  • ⏱
    5x Faster Onboarding
    What used to take 5 minutes per item now takes 30 seconds. Onboard a new vessel's catalog in an afternoon.
// Built For Both Sides

For the crew.
For the office.

MarineStock is the rare tool that makes life easier for everyone — not just the people writing the cheques.

// FOR THE CREW

Less Paperwork. More Engineering.

Spend your time fixing engines, not filing spreadsheets. MarineStock handles the boring parts so you can focus on the work that matters.

  • ✓
    One-tap quantity updates from any phone, tablet, or laptop
  • ✓
    Built-in calculator & converters — no more switching apps mid-task
  • ✓
    Search across everything — name, supplier, PN, location
  • ✓
    Photos and MSDS at your fingertips — show the inspector instantly
  • ✓
    Works offline — full functionality even mid-ocean
  • ✓
    Zero training — designed by an engineer who hates clunky software
// FOR THE OFFICE

Visibility. Forecasting. Control.

See your entire fleet at a glance. Spot problems before they become emergencies. Make purchasing decisions based on real data, not crew estimates.

  • ✓
    Fleet-wide dashboard — every vessel, every item, in real time
  • ✓
    Reorder forecasts — predict stockouts 30 days ahead
  • ✓
    Cross-vessel comparison — spot inefficiencies and anomalies
  • ✓
    Expiry pipeline — eliminate waste before it happens
  • ✓
    Audit-ready reports — PDF/Excel export anytime
  • ✓
    Template migration — onboard new vessels in minutes, not weeks
// Bonus Toolkit

13 engineering tools.
Always one tap away.

Because a real engine room app should do more than count drums. From quick math to ASTM 54B fuel temperature corrections, the tools you actually use — built right in.

🧮
Calculator
📐
Unit Converter
🛢
Tank Volume
⚖️
SG / API / Density
🧪
Chem Dilution
🌡
Fuel Temp Corr.
📏
Pipe Volume
⚙️
Bolt Torque
🔋
Battery Runtime
📅
Date Calculator
🌍
Time Zone
📝
Notes
📊
Percentage
// More Than Inventory

Meet VesselBoard.

The digital messroom announcement board your crew actually wants to look at. Mount a TV or tablet in the messroom — VesselBoard turns it into a live information hub for the whole vessel.

  • 📢
    Live Announcements
    Post safety bulletins, schedules, and notices from any device — instantly visible on every screen onboard.
  • 📸
    Crew Photo Carousel
    Crew upload photos from their phones. Shore leave, ports of call, life onboard — celebrating the people behind the work.
  • 🌤
    Live Weather & Position
    Real-time weather forecast and vessel position on a live map. No additional subscriptions, no API costs.
  • 📋
    Watch Schedule & Duty Roster
    Display the rotation, today's duties, and key information without printing a single piece of paper.
  • 📄
    Safety Bulletin Viewer
    Upload PDFs once. The whole crew sees them on the messroom screen and can read details on their phones.
M/V VESSEL NAME
📍 South China Sea · 12.4°N 114.7°E
14:32
07 APR 2026
📢 ANNOUNCEMENTS
Safety Drill
Tomorrow 1000H · All hands
Port Arrival
Singapore · 09 APR 0600H
🌤 WEATHER
28°C
Partly Cloudy
Wind 12kt · Sea 1.5m
📸 CREW MOMENTS
Sunset · Indian Ocean
⏱ WATCH
00–042/E
04–083/E
08–12C/E
🔒
SHA-256 Encryption All passwords hashed
☁️
Cloud Backed Google Firebase infrastructure
⚓
Sea-Tested Built in real engine rooms
🛠
Built by an Engineer Not a software company
// READY TO TRY

The next inventory
system you'll ever need.

No installation. No app store. No contracts. Open the link, log in, start counting. Onboard your first vessel in 30 minutes.

Open MarineStock → Request a Demo
Maynard Timoteo
// About the Developer

Maynard Timoteo

Marine Engineer · Builder of MarineStock

MarineStock wasn't built in a Silicon Valley office — it was built in an engine room at sea. Every feature came from a real frustration: a missing MSDS during inspection, a stockout no one saw coming, a second engineer's spreadsheet that nobody could find.

As a serving marine engineer, I built MarineStock to solve problems I face on my own watch. The best part is that I'm still using it onboard every day — and improving it whenever I find something that could be better. Every fix in this app came from real use, not a spec sheet.

"I built MarineStock because I needed it. If it makes one engineer's life easier, one inspection smoother, one port call less stressful — then it's done its job."