Solar-powered Autonomous Vessel Crosses the Atlantic
Solbian solar panels. The system powers the drive, plus the steering actuator, electronics and bilge pumps. The steering, communication, hardware integration, navigation and energy management on board are all managed by Mahi’s self-developed USV software. The boat communicates using an onboard satellite modem, GPS and automatic identification system.Mahi Two’s oceangoing adventure started off well, despite spells of bad weather. “The first few months were flawless. Other than adjusting speed to compensate for reduced solar power production, Mahi took on stormy, cloudy days at sea with
EcoLight AZFP Buoy to Monitor Light and Under-Ice Zooplankton
at multiple ultrasonic frequencies.The buoy has solar panels and a set of rechargeable and non-rechargeable backup batteries. In the summer, when there is abundant solar power, the buoy will sample for 20 minutes every two hours, limited by the amount of data that can be transferred via the Iridium satellite modem connection. In the winter, the buoy will sample for six minutes every three hours, limited mostly by available backup battery capacity. This satellite link is bi-directional allowing for the downloading of data as well as the ability to reconfigure instrument parameters remotely.Others involved
OSIL Buoys in Tidal Turbulence Study for SEACAMS2
. The OSIL buoys will serve as data collection platforms for ADCP instruments measuring currents and waves on the seabed that will transfer their data to the buoy via omnidirectional acoustic modems. The buoys will then transmit the data to the project base station using the OSIL SBD Iridium Satellite Modem, and will operate alongside other high-resolution logging current meters and CTDs in the high-profile project. The robust buoy platforms will be moored in approximately 50m water depth in one of the most dynamic and turbulent environments in the UK coastline. The specialist seabed instrument
OSIL Offers New Low-cost Satellite Modem
Ocean Scientific International Ltd (OSIL) has added a new low-cost, low-power satellite modem to its range of telemetry equipment. The system will publish data, including traditionally high cost/volume currents and waves, from any location globally using the Iridium satellite network. Monthly line rental costs are minimal, and data costs are kept low (as little as 4p per message) by using SBD messaging with big bundle deals available for multiple or long term deployments. Conventionally current and wave data transmitted via satellite has proved expensive for the end user owing to the
Buoy Designed to Monitor Turbidity at Dredging Sites
wiper. The sensor is protected by a cage firmly attached to the buoyant body. The buoy and the data acquisition system has an open architecture that allows for integration of other types of sensors like CTDs, fluorometers, etc. The hollow interior of the buoy contains the satellite modem installed for data transmission. The logger sends turbidity data at a predetermined interval on the satellite modem to the MacArtney developed MetOcean Gateway portal, a web-based data acquisition and data storage system that forms an integral part of the buoy system. The buoy is also available
February 2024
