31
ENGINEERING
laminated with carbon fibre.
Solar panel is a Sunbeam 126
which generates around 100
watts of power.
It has a carbon fibre rudder while
the is Keel fabricated from an
aluminium spine overmolded
with urethane. There is 4.5 kg of
lead in keel bulb.
The vessel is driven by a Blue
Trail Engineering MTR-2000
Motor connected to a APC Sport
8x8 propeller and controlled by a
Castle Creations Phoenix Edge 50
controller.
For Power storage, there are a
pair of Blue Robotics 14.8 V, 18
Ah (total of 532 watt-hours)
The vehicle can communicate via
a Rockblock 9603 satellite
modem.
The navigation system employs a
Arduino ESP32 auto pilot running
code developed by blue Trail
engineering. Other electronics
include a Pololu MinIMU-9 v6 for
attitude and heading, Adafruit
Mini GPS PA1010D for
positioning,
EagleTree RPM
Sensor for
motor RPM
…. And under the water
Propeller and
weighted keel
Electronics
and battery
enclosure in
the hull
Propeller and keel damaged
by a marine predator