Supported Features
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Dark Interface
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Sufficient Contrast
Marine Engine Logbook
Hours, Parts, Service, Fuel
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Signal K Support Added!
Marine Engine Logbook
MEL is a modern replacement for paper engine logbooks, built for DIY boaters, cruisers, loopers, and captains who want accurate, organized vessel records.
Designed around real-world boating workflows, MEL helps you track engines, generators, Seakeeper systems, watermakers, and any hour- or time-based maintenance. Whether you’re managing a single vessel or multiple boats, MEL keeps logs clean, separated, and easy to review.
Track What Matters
Log engine and generator hours.
Record maintenance by time or runtime.
Record vessel service from shops.
Track Seakeeper, watermaker, and auxiliary equipment.
Maintain clear service histories over the life of the vessel.
Fuel
Optional add on module for logging fuel ups.
Easily add Recipts from fuel docks or fuel deliveries.
Track yearly fuel expenses and operating metrics.
Parts & Maintenance Records
Document key engine components such as fuel and oil filters, impellers, belts, and other service items. Store exact part numbers so reordering next season—or at the parts counter—is fast and accurate.
Professional Logbooks
MEL produces clean, organized records suitable for long-term ownership or vessel sale.
Export logs to clean organized PDF or direct to a printer.
Print paper copies for ship’s records or binders.
Transfer vessel logs to new owners
Multi-Vessel Support
Manage multiple vessels in one app. Each boat’s logs, maintenance history, and parts lists remain clearly separated and organized.
Built for Boat Owners
MEL is designed for owners who maintain their own vessels, as well as captains responsible for accurate records. Whether you’re weekend cruising, running offshore, or sailing the Great Loop, MEL provides a reliable system for documenting your vessel’s history.
Stop juggling notebooks and loose papers.
MEL gives you a clear, organized, and professional engine logbook—always with you, and ready when you need it.
Lifetime Pro — one-time purchase. No subscription. No renewal.
Marine Engine Logbook Pro Annual Subscription
Marine Engine Logbook Pro — Annual auto-renewing subscription.
Starting at $9.99 USD per year (price varies by region).
Includes a 14-day free trial where available. After the trial period, the subscription renews at the applicable regional price unless canceled.
Subscription automatically renews unless canceled at least 24 hours before the end of the current period.
Your account will be charged for renewal within 24 hours prior to the end of the current period.
You can manage or cancel your subscription at any time in your App Store account settings.
Privacy Policy:
https://www.digital-helm.com/mel/privacy
Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Widgets! Quickly glance at maintenance items and safety items.
Added Safety Items which track expiration dates of safety gear, flares, first aid kits, life jackets, etc.
Added a Maintenance plan section for the user to define scheduled service and intervals based on time, hours, or both. as you make log entries you can be notified of upcoming service.
Signal K support! : Vessels equipped with a Signal K server and connected engines can import engines hours directly into logs and fuel, and trips!
The developer, KEVIN M GRAVES, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- KEVIN M GRAVES
- Size
- 21.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- MEL Pro - Lifetime $49.99
- Marine Engine Logbook -Pro Annual $9.99
- Copyright
- © 2026 Kevin Graves
