Time & Tide Clock

The Time & Tide Clock is an indispensable instrument for any mariner or coastal dweller. This precision analog clock combines accurate timekeeping with a tide indicator that shows the progression of high and low tides throughout the lunar day. Whether for shipboard use on a bridge or bulkhead, or for a seaside home, this clock helps you synchronize with the rhythm of the sea.

Crafted with a robust, weather-resistant casing and a clear, easy-to-read dial, this clock is built to withstand harsh marine environments. The self-contained quartz movement ensures reliable performance while the tide dial cycles through the 12-hour 50-minute lunar tide cycle, giving you at-a-glance awareness of tidal states. This makes it a vital addition to any ship's navigation equipment.

Key Features

Technical Specifications

Dial Size8 inches (203 mm)
MovementQuartz, battery-operated
Power Source1 x AA battery (not included)
Tide Cycle12 hours 50 minutes (lunar day)
MountingSingle-hole bulkhead mount
Case MaterialWeather-resistant ABS plastic
LensCrystal-clear glass
Water ResistanceSplash-proof
Operating Temperature-10°C to 50°C (14°F to 122°F)

Frequently Asked Questions

How does a tide clock work?

A tide clock uses a special quartz movement calibrated to the lunar day, which is 24 hours and 50 minutes. This causes the clock to complete a full rotation slightly slower than a standard 12-hour clock, allowing the hands to track the average time between high tides. The tide hand indicates approximately how many hours to the next high or low tide.

How do I set the time and tide on the clock?

Set the regular time using the time-setting knob, just like a standard clock. Then, set the tide hand to the nearest high tide time using the separate tide-setting knob. Adjust for your local tide schedule, and if necessary, recalibrate after several moon cycles to fine-tune accuracy.

Is the tide clock accurate for my location?

No tide clock can be perfectly accurate for all coastal locations due to geographic and meteorological influences. However, this clock provides a close approximation (typically ± 30–60 minutes) and is useful for general navigation and planning. For safety-critical decisions, always consult official tide tables.

What kind of battery does it need?

The clock operates on a single AA battery (not included). A fresh alkaline battery should last over a year under normal use. For best performance, use a high-quality battery and replace it every 12 months.

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