Effective Date: July 2026
Our website utilizes tiny diagnostic scripts ("cookies") primarily to remember security preferences and coordinate reservation states. Specifically, our interactive Submerged Floorplan Navigator relies on session storage to render blueprint coordinates smoothly on your screen.
We believe in absolute clarity regarding our digital footprint. Here is exactly what is written to your browser storage:
| Cookie Name | Classification | Retained Duration | Operational Purpose |
|---|---|---|---|
tunnelsy-cookie-consent |
Essential | 365 Days | Remembers your selection regarding other cookie layers and hides the bottom panel. |
tunnelsy-pass-state |
Functional | Session-only | Tracks date, time, and tide configurations during your booking phase. |
tunnelsy-floorplan-index |
Preference | 30 Days | Remembers the last active blueprints layer you investigated on our home page. |
Libraries Tunnelsy does not incorporate trackers from commercial digital platforms, social media aggregators, or automated marketing agencies. All interactions are securely recorded on our private servers in Boston Harbor.
You can adjust, clear, or deactivate cookie tracking systems inside your browser's primary privacy control deck. Disabling essential cookies may result in slight performance lags on our interactive floorplans and booking pages.