Watchline
Persistent coastal monitoring — affordable, deployable, yours.
Eyes in the water. Continuous measurement of the parameters that matter most to coastal operators.
What Is Watchline
Watchline is Astraeus's fixed monitoring platform. It sits in your water, continuously measuring the parameters that matter most to coastal operators, and streams data to the Halcyon intelligence platform in real time.
Hardware you can see. Data you can trust.
What It Measures
Temperature
1
Water temp drives shellfish growth rates, HAB development, species distribution, and regulatory thresholds
Dissolved Oxygen
2
DO levels below threshold trigger hypoxic events that kill shellfish and fish — early warning is critical
Chlorophyll-a
3
Proxy for phytoplankton density — indicates food availability for shellfish AND potential harmful algal bloom development
GPS / Position
4
Tracks equipment location for farmers (is my gear still there?), monitors drift, reduces theft/loss risk
Purpose-Built for Coastal Operators
Watchline isn't a repurposed open-ocean weather buoy with sensors bolted on. Every parameter we measure was selected because coastal farmers, port managers, and resource managers told us they needed it.
Primary purpose
GPS asset tracking
Ecological modeling
Chlorophyll-a
Target customer
Other Smart Buoys
Open-ocean weather data for shipping route optimization
Buoy position only
None — raw data and dashboards only
Not available
Shipping lines, offshore energy, government agencies
Watchline
Coastal ecosystem monitoring for operational decisions
Equipment/infrastructure tracking for farmers
Integrated with Halcyon for threshold forecasting
Built in
Shellfish farmers, kelp operations, port authorities, tribal nations
Entry cost
~$5K–$14K hardware purchase + satellite data subscription
Subscription service — no large upfront hardware buy
“A shellfish farmer doesn’t need wave spectra optimized for cargo routing. They need to know if dissolved oxygen is trending toward a threshold that triggers a DOH closure. That’s a fundamentally different product.”
We Deploy & Maintain
Managed service, not a product you buy and figure out yourself
Subscription Pricing
Starting at $150–300/month per site
No Capital Expenditure
We own the hardware, you get the data and intelligence
Proven in Harsh Conditions
PNW winter deployments at Oakland Bay and Drayton Harbor