ROTV MINIBAT HAMMERHEAD

Description:

HAMMERHEAD autonomous self-propelled towed vehicle of the OSIL brand (Ocean Scientific International Limited).

The HAMMERHEAD is a vehicle platform featuring extremely light corrugated instrumentation and designed to be towed with a wide variety of data collection instruments. This is the improved evolution of the ROTV MiniBat FC60.

It provides an extremely flexible profile system for use in estuaries, lakes, rivers and coastal areas.

The HAMMERHEAD is easily deployable by one person from a vessel of any size and works at a user-defined depth below the surface, above the seabed or in an undulating configuration between 2 depths up to 60 meters.

Suggested towing speeds are between 1 and 10 knots and typical midfield inspection speeds are between 3 and 8 knots.

The basic system includes:

- HAMMERHEAD towing body

- On-board control electronics

- Pressure sensor

- Adjustable wings

- The graphical interface software and the control box

- 7-conductor Y-cable

One branch of the Y-cable of the HAMMERHEAD control leaves four conductors free for user instrumentation.

Characteristics:

- Flexible assembly of third-party instruments

- Remote control of ripples by computer

- Easy towing with motorized boats 5 to 10 meters long

- Profiling at speeds up to 10 knots

- Power supply - 12V DC or 120 / 240V AC line battery

- Direct depth measurement

- Depth of use - from the surface to 60 meters

- Automatic tracking and avoidance of funds

- GPS data recording

- Basic depth stability: 1 meter

- Housing resistant to environmental conditions

The control software allows the user to position the HAMMERHEAD inverter vehicle in the desired depth range, maintain a constant depth, or maintain a given altitude above the seabed. The position relative to the bottom of the HAMMERHEAD is shown on a graphical screen and records this information along with latitude, longitude, boat speed, sail angle, time and date. An additional line allows the integration of GPS data (NMEA0183) on the screen and records.

The software supplied is independent of any software necessary to control and retrieve the instrumentation data on board the HAMMERHEAD.

- The complete system which includes HAMMERHEAD: instrumentation (here a CTD with turbidity and dissolved oxygen sensor), electric winch with 150 meter umbilical cable, control box resistant to environmental conditions, software and system integration

Specifications:

- Towing body:

                      o Total length: 75 cm

                      o Total width: 70 cm

                      o Body width: 13 cm

                      o Weight in air (unloaded): 13 kg

- Construction materials: Stainless steel, PVC, Delrin

- Power

                      o HAMMERHEAD power supply module: 30 watts

                      o Requirements for the HAMMERHEAD power supply module: 120/240 V AC power supply, either directly or by means of a 12 V DC battery and a DC-AC converter.

                      o Operating voltage: +/- 12 VDC floating

                      o Consumption: 6.5 watts

- HAMMERHEAD data control:

                      o Transmission using an 8 mm diameter cable and 7 conductors (Kevlar)

                      o Data format: RS-232 NMEA 0183 I / O, 4800 bauds

- Integrated depth sensor:

                      o Safe working range: 0 to 100 m

                      o resolution: 0.4 m

                      o Working depth: 60 m

- CTD instrumentation that can be integrated into HAMMERHEAD:

                      o Includes conductivity, temperature and depth sensors from 0 to 200 meters

                      o Turbidity sensor (self-cleaning)

                      o Optical type dissolved oxygen sensor

                      o Includes calibration cable and software for communication and data collection, as well as processing of collected information for salinity calculations.