Boats
The Seaviews One
The Seaviews One is a vessel specially developed for bathymetric and sonar measurements and allows for seamless integration of the R2Sonic 2022 echo sounder.
- Very compact (5.5 m long, weighing less than 400 kg), enabling rapid deployment and reduced mobilisation costsVery compact (5.5 m long, weighing less than 400 kg), enabling rapid deployment and reduced mobilisation costsHighly manoeuvrable due to its small size
- Very shallow draught: measurements possible in water depths of less than 50 cm
- Integrated power source sufficient to power the instruments
Sea kayak
Sea kayaks can be used to take measurements in very shallow waters, for example to ensure continuity between the topographical profile and the bathymetry of a beach, or to create profiles along port and coastal structures (quays, dykes, outfalls, etc.). A single-beam echo sounder can usually be attached to them.
Le Blue boat
The Blue Boat is a surface drone specially designed to take measurements in very shallow waters. Like a sea kayak, it can be equipped with a single-beam echo sounder. It also has a mounting bracket for adding a camera to perform photogrammetric measurements and/or georeferenced surveys as ground truth. Thanks to its autopilot system, it offers highly accurate servo-controlled navigation.
The Photocéan Platform
The Photocéan platform is a modified hunting buoy designed to carry measuring equipment. It features a GPS antenna on its above-water section. A mounting system on its underwater section allows one or more cameras to be attached for photogrammetric measurements or georeferenced field surveys. This platform can also accommodate a single-beam echo sounder for measurements in very shallow waters. The buoy can be manoeuvred using ropes from the shore or by a swimmer on the surface. Seaviews has two buoys of this type that can accommodate instrumentation.
The Fifish V-EVO ROV
The ROV Fifish V-EVO is a versatile underwater drone designed to capture 4K UHD images at 60 frames per second, up to a depth of 100 metres. Easy to pilot, it offers total 360° freedom of movement, making it extremely manoeuvrable. Thanks to its compact size and light weight, it can easily access hard-to-reach areas and is effortless to transport. ROV FIFISH seaviewsThe ROV Fifish V-EVO is a versatile underwater drone designed to capture 4K UHD images at 60 frames per second, up to a depth of 100 metres. Easy to pilot, it offers total 360° freedom of movement, making it extremely manoeuvrable. Thanks to its compact size and light weight, it can easily access hard-to-reach areas and is effortless to transport.
This ROV is particularly suited to infrastructure inspection missions and biodiversity monitoring in shallow areas. Seaviews has customised it to meet the specific needs of its missions. In particular, it can be equipped with a USBL system for precise positioning, as well as a dual synchronised camera mount, providing complete coverage for photogrammetry work.
Sounders
Multibeam echo sounders
R2Sonic 2022 model
- 200 kHz to 450 kHz wideband sounder
- Full Water Column Mode
- Fully digital design (no signal degradation in cables)
- Lightweight and compact (for its performance), low power consumption
- Highly accurate time stamping of GPS data ensuring perfect synchronisation of attitude, position and acoustic data
- Angular aperture of 1° x 1°, sweep of 160°, range of 500 m
- Simultaneous reflectivity imaging
Single-beam echo sounder
The ISA500 from Impact Subsea is a compact and robust echo sounder that can be easily adapted to a vessel of opportunity or a small boat.
- a small footprint allowing measurements to be taken in shallow waters from a depth of 0.1 m
- a frequency of 400 to 600 kHz
- a range of 0.1 to 120 m
- an opening angle of 6°
- a built-in attitude control unit
Lidar
The Hesai Pandar XT lidar operates by mechanical rotation, allowing it to scan a large area with each pass. Its features include a range of 0.3 m to 80 m, an accuracy of 2 cm, a field of view (FOV) of 360° horizontally and 31° vertically, and an adjustable frame rate of 5, 10 or 20 Hz. Its small size (10 cm in diameter and 8 cm in height) and low weight (0.8 kg) make it suitable for use on various types of boats and light land vehicles.
Positioning
I2NS ettitude control centre
2NS model manufactured by Applanix and specifically designed for the 2022 echo sounder
- High level of integration with the sounder, particularlyHigh level of integration with the sounder, particularlyin terms of synchronisation
- Full GNSS mode (GPS, GLONASS, GALILEO) allowing it to maintain positioning despite partial obstruction (presence of vegetation, walls, etc.)
- Position accuracy of 1 cm (1.5 cm vertically)
- Roll and pitch accuracy of 0.015°, heading accuracy of 0.02°
- Maintaining position in inertial mode in the event of GNSS antenna obstruction
- The fully sealed sensor is mounted on the same bracket as the acoustic probe. This ensures that there is no deformation of the bracket.
Trimble BX982
The Trimble BX982 GNSS receiver provides centimetre-level positioning. Its small size makes it easy to integrate into a positioning device. Seaviews uses the BX982 primarily as a base during multibeam echo sounder surveys, but it can also be deployed as a rover.
- Two 220 Maxwell 6 Chips channels for multi-constellation GNSS
- Supports OmniSTAR VBS / XP / G2 / HP
- Dual-Antenna Inputs for high trajectory accuracy
- Centimetre-level positioning accuracy
- Ethernet connectivity
Celerimeter
Two celerimeters
- One close to the sounder wich is essential for acoustic data treatment
- One used to for celerity profiling
Photo/video
Towed camera
The towed video system used during field missions consists of a lambda wing that serves as a mounting bracket for optical equipment and allows the entire system to dive. This bracket can simultaneously hold a camera with surface feedback (via the power cable connecting it to the boat), a camera or video camera that records images, and a pressure sensor to measure the altitude of the fish. The video transects are georeferenced using a GNS RTK on the vessel towing the system. The latter can be towed simultaneously during the acquisition of acoustic data with a hull sensor.
Sony Alpha 6000
Sony Alpha 6000 mirrorless camera in an Ikelite housing
- Waterproof housing to 60 m with TTL connection for flash synchronisation
- Sony 10-18 mm wide-angle lens
- Inon Z240 external flash with a guide number of 24 and an angle coverage of 100°
- TTL cable synchronisation with GNSS RTK possible
Canon M50
Canon M50 mirrorless camera in an Ikelite housing
- Waterproof housing to 60 m with TTL connection for flash synchronisation
- Canon 11-22 mm wide-angle lens
- TTL cable synchronisation with GNSS RTK possible
AEE S70
The AEE Magicam S70 action camera in a waterproof case rated to 70 m. This compact, high-resolution camera can be mounted on a wing-shaped depressor towed by the Seaviews One to produce georeferenced video transects. It is also used to take photos and videos while scuba diving.
DJI Osmo Action 5 Pro camera
The DJI Osmo Action 5 Pro is a compact, high-resolution camera equipped with a high-performance stabilisation system. Designed for demanding environments, it is particularly effective in marine environments thanks to its accessories: its waterproof case allows it to descend to depths of over 60 metres, and its colour temperature sensor ensures faithful and natural colour rendering underwater. The DJI Osmo Action 5 Pro is a compact, high-resolution camera equipped with a high-performance stabilisation system. Designed for demanding environments, it is particularly effective in marine environments thanks to its accessories: its waterproof case allows it to descend to depths of over 60 metres, and its colour temperature sensor ensures faithful and natural colour rendering underwater.
Seaviews uses it both for field data collection (photos/videos) and for photogrammetry, thanks in particular to its Timelapse mode, which is ideal for this type of acquisition.