AMELA
DeckMate Co., Ltd. — Platform Build Story
ℹ︎For confidentiality, company names, project names, and system images have been replaced with pseudonyms and mock-ups.

Seafarer labor, health, and logbooks —Built in-house from scratchinto an app onboard.

DeckMate is a platform that supports seafarer labor management in the maritime industry. Used across 48 vessels and over 3,000 seafarers nationwide, it connects the onboard mobile app with the HQ admin console.

This is the story of launching a new platform — built in-house from scratch in 14 months — to digitize work/rest-hour management, fatigue/stress checks, and the seafarer's book.

See the build story Try the demo See overview
Crew managed
3,000+
Vessels in service
48 vessels
Less tallying effort
-90%
Paperless
100%
DeckMate
Sato Taro · First Officer
Work
8.5h
Rest
11h
Compliant
Work hours log
Fatigue check
Logbook
Vital measurement
01
CLIENT
About the client

DeckMate Co., Ltd., supporting the maritime industry.

DeckMate Co., Ltd. is a shipping operator running multiple vessels. Until now, it managed seafarer labor, health, and statutory records with paper and Excel.

At sea, where connectivity is limited, accurately tracking each seafarer's work/rest hours and health while staying compliant was a prerequisite for keeping the business running.

3,000+
Crew managed
48 vessels
Vessels in service
Nationwide
Coverage area
BUSINESS FLOW — From seafarer to headquarters, end to end
STEP 1
Seafarer records
Enter work/rest hours and watches in the onboard app
STEP 2
Health check
Fatigue/stress checks and vital measurements
STEP 3
Sync to HQ
Aggregated to the HQ console whenever connectivity allows
STEP 4
Approval & form export
Approve logbooks and export them as statutory forms to Excel
02
CHALLENGE
Design challenges to solve

Overcoming paper-and-Excel operations through four design challenges.

This was more than process efficiency — it was a management challenge tied directly to compliance, seafarer safety, and how fast HQ could make decisions.

If work and rest hours can be tracked accurately
The Maritime Labour Convention's rest-hour rules are complex.Paper tallying makes instant compliance visibility hard was the case.
If health checks can be carried out reliably
Fatigue and stress checks werePaper operations cause missed checks and tallying effort was high, so deciding whether a consultation was needed also tended to be delayed.
If the seafarer's book can go paperless
Because the seafarer's book and logbook are on paperLoss risk and update effort existed, and searching past records was inefficient too.
If it could be shared from ship to HQ instantly
Connectivity at sea is limited,sharing status with HQ is delayed meant decisions were always playing catch-up.
03
ARCHITECTURE
The architecture we built together

Built in-house from scratch — four domains unified on one platform.

Together with DeckMate Co., Ltd., we built a seafarer mobile app and an HQ admin console on a shared cloud platform. Data entered onboard syncs to headquarters whenever a connection is available, enabling near-real-time visibility into compliance status.

AMELA
EXECUTION
14 months
Duration
96 person-months
Total effort
Domain ①
Work & rest hours
Challenge
Paper tallying hides convention-compliance status
Solution
Auto-assess rest hours from the watch timeline
Instantly check for 10+ hours of rest
Domain ②
Fatigue & stress
Challenge
Paper operations cause missed checks and tallying effort
Solution
Run it in the app with automatic scoring
Auto-notify HQ of those needing a consultation
Domain ③
Logbook & seafarer's book
Challenge
Paper risks loss and is inefficient to search
Solution
Electronic logbook + captain-approval workflow
Export to Excel as statutory forms
Domain ④
Ship ⇄ HQ integration
Challenge
Limited connectivity delays sharing with HQ
Solution
Designed to sync when connectivity is available
Centralized visibility on the HQ console
Frontend
Mobile WebviewAAdminLTE admin console
Backend
LaravelPHPSanctum API authentication
Infra & Data
MySQLRedisS3
04
IMPACT
The value the platform creates

DeckMate Co., Ltd.'s frontline moves to the next stage.

A platform for real-time visibility into compliance
HQ can instantly check rest-hour compliance.
A system that watches over seafarer health
Catch signs of fatigue and stress early and connect them to consultations.
Drastically cut tallying effort
Paper-based tallying is gone, easing HQ's administrative burden.
Zero-paper, fully paperless operations
Digitizing logbooks and seafarer's books eliminates the risk of loss.
⚓
STAKEHOLDER
Seafarer
Typically
Recorded on paper, with effort at every submission
With DeckMate,
A few minutes on a smartphone — log watch-end with one tap
Minimize recording effort
letting people focus on their real work
🏢
STAKEHOLDER
HQ & labor management
Typically
Collecting paper and tallying in Excel — slow compliance checks
With DeckMate,
Grasp compliance status instantly on the dashboard
Faster decision-making
Tallying effort -90%
🩺
STAKEHOLDER
Occupational physician & health management
Typically
Check results scattered on paper — slow consultation decisions
With DeckMate,
Auto-detect and notify those needing a consultation
Early detection of health risks
Protecting seafarer safety
DEMO

Experience DeckMate through a working live demo.

Try all three scenarios right in your browser.

FLAGSHIP
Seafarer App — Work Hours Log
  • · Watch timeline & automatic rest-hour assessment
  • · Compliance badge display
  • · Log watch-end with one tap
Launch demo →
Fatigue & stress check
  • · Answer the questions for automatic scoring
  • · Three levels: Good / Caution / Consultation needed
  • · Auto-share to HQ
Launch demo →
HQ management dashboard
  • · Seafarer labor overview and KPIs
  • · Filter by rest-review / pending approval / high fatigue
  • · One-click logbook approval
Launch demo →