Log and report your sea time for USCG licensing requirements. Easily record trips, track progress, and generate structured service records. Optional Pro subscription supports marine conservation.
1.2.0
August 18, 2026
SeaLog 1.2.0 includes major improvements to GPS tracking, environmental conditions, and exported trip records. SeaLog now uses a new GPS Quality Engine that continuously evaluates location observations during an active trip and filters unreliable positions before they become part of your saved track. This produces cleaner, more representative records of your movement on the water. The Trip in Progress screen now displays information about this GPS process. You may notice that SeaLog evaluates many more GPS observations than it saves. This is normal. SeaLog intentionally retains selected, trusted positions needed to document the track while rejecting poor-quality or unnecessary points. You do not need to manage these numbers or take any action while underway. Environmental conditions are now recorded automatically. SeaLog captures conditions near the start of a trip, approximately hourly while underway, and when the trip ends. The Conditions card shows how many snapshots have been recorded and lets you review them while the trip is active. You can still use CAPTURE NOW whenever you want an additional Conditions snapshot, such as when weather or sea conditions noticeably change. Manual captures are added to the automatic history rather than replacing existing observations. Conditions records now include available modeled weather and marine information such as temperature, wind, humidity, visibility, waves, swell, currents, and water conditions. These values represent modeled environmental conditions associated with your location and time; they are not measurements made by your vessel or phone. If some environmental information is temporarily unavailable, SeaLog preserves the Conditions snapshot and can attempt to complete the missing information later. CSV exports have also been improved. The All Trips export provides clean trip-level records, while the Trip Specific export provides detailed Trip, GPS, and Conditions records with clearly organized and properly aligned fields. SeaLog Pro purchase and restore handling has also been improved. SeaLog Pro continues to provide PDF sea service reports and KMZ and GPX exports. There is nothing new you need to do while recording a normal trip. Start and end your trip as usual, and SeaLog handles the new GPS processing and automatic Conditions recording in the background.
MoreSeaLog Pro features and exports.
SeaLog is a professional sea time logging and reporting app designed to help mariners and boaters track their time on the water for USCG licensing requirements. It allows users to record trips, organize vessel experience, and generate structured service records.
Most of the app's functions are free. However, generating the final report and using several validation features require a SeaLog Pro subscription. This subscription model is freemium, offering core features for free with advanced options available for purchase.
The SeaLog Pro subscription unlocks the ability to generate final reports and access several validation features. A portion of the subscription fee also contributes to marine conservation efforts through the Coastal Conservation Association.
During active trips, SeaLog uses your device's location for validation through periodic GPS position tracking. This location data is only used during active trip recording and is stored locally on your device for privacy.
Yes, SeaLog makes it easy to build a complete history of your sea service, including the ability to import existing records. This helps users consolidate their maritime documentation.
For each trip, you can optionally capture important environmental details such as tide state, sea state, weather summary, wind, and temperature. This data is stored with your trip record.
SeaLog generates clean, structured service reports designed to align with USCG expectations. These reports include multi-page summaries, per-vessel and per-trip breakdowns, qualified service totals, and attester-ready signature sections.
No, SeaLog does not contain advertisements. The app is designed to be ad-free, with monetization focused on optional in-app purchases for premium features.