Marine Engine Logbook

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.

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