because harbormasters deserve software that doesn't look like it was built in 1997
GunwaleGrid manages marina slip rentals, vessel compliance docs, and harbormaster ops in one ruthlessly overbuilt dashboard. It tracks berth assignments, liveaboard permits, hazmat spill logs, and insurance certificates across every dock in the fleet. This is what happens when you spend one too many weekends watching marina staff use Excel and a binder full of Post-its.
- Full berth lifecycle management from arrival estimate to departure clearance
- Vessel compliance engine that cross-references over 140 document types against USCG and state-level requirements
- Two-way sync with DockMaster Pro and PortBase for real-time slip availability across multi-facility fleets
- Hazmat incident logging with automatic proximity alerts to neighboring berths. One binder fire was enough.
- Liveaboard permit tracking with configurable renewal windows and automated harbormaster notification queues
Stripe, Twilio, DockMaster Pro, PortBase, TideSync API, VesselTrack360, MarineVault, Salesforce, QuickBooks Online, HarbourLedger, NOAA Tides & Currents, SlipLedger Cloud
GunwaleGrid runs as a set of loosely coupled microservices behind an Nginx reverse proxy, with each operational domain — slip management, compliance, billing, incident logging — isolated into its own service boundary. The primary data store is MongoDB, handling all transactional slip assignment and payment records with the kind of write throughput this domain actually demands. Redis handles long-term document archival and certificate storage, keeping compliance history fast and queryable across multi-year vessel records. The frontend is a React dashboard that talks exclusively to an internal GraphQL gateway — no REST, no compromises.
🟢 Production. Actively maintained.
Proprietary. All rights reserved.