Obtaining data directly from the seabed can be of high value but can be a complex operation. Many different instruments are available to conduct seabed investigations, but the transportation of this equipment to and from the seabed poses many challenges. These include limited carrying ability, storage issues, limited power supply and inaccurate deployment.
To address those challenges, KUMO developed the Lander, a carrier that has been designed to cater for all subsea instrument transportation and deployment needs.
Attached to the Lander, instruments can be carefully lowered to the seabed aided by a video-controlled launcher. Once in the desired location, the Lander can be left autonomously until the research is concluded. At this point, an acoustic signal or time release alerts steel weights to drop and the Lander rises to the surface for recovery.
The Lander is equipped to carry multiple instruments simultaneously. The basic frame is comprised of an open tripod with weights, float units, radio beacon and strobe lights.
With its lightweight, corrosion and pressure-resistant titanium build, the Lander is effective to an operational depth of up to 6,000 m. In addition, the Lander can be designed to customer requirements to achieve the best execution for specific operations.
|Payload (marine instruments)||Steel frame: 210 kg max, titanium frame: 260 kg max|
|Buoyancy||Glass spheres with protection shells (max 21×17″ spheres). Syntactic foam|
|Deployment speed||0.5 – 1.0 m/s|
|Material options||– Steel– Titanium (44% lighter)|
|Operational depth||Up to 6000 m|
|Dimensions||Diameter – 2200 mm, Height – 2500 mm|
|Basic equipment||Open frame, three legs, weights, instrument carrier, float units|
|Optional equipment||Flash, radio beacon, flag to aid location, benthic chamber, syringe sampler, video camera, sediment trap, ADCP, EDDI-correlation, CTD, turbidity|
|Part of lander||weight on air||in salt water|
|Lander frame||217 kg||192 kg|
|Release unit (2 pcs.)||25 kg||15 kg|
|Benthic chamber (3 pcs.)||114 kg||69 kg|
|TUNA-tube (2 pcs.)||72 kg||36 kg|
|Syringe sampler (3 pcs.)||51 kg||27 kg|
|Glass buoyancy (21 pcs.)||473 kg||minus 535 kg|
|Complete system approx.||950 kg||minus 195 kg|
|Ground weight (3 pcs.)||450 kg||395 kg|
|Complete system with weight approx.||1400 kg||200 kg|
|Size||Dia x h||2610 mm x 2640 mm|