The costs of an experiment with OBS depends mainly on the number of instruments used and the duration of deployment. They can be devided into consumables (anchor, small parts and batteries), insurance and services (mobilisation, demobilisation and transports). Additionally, one or two experienced technician are required on board for deployment and recovery.
Important! Please note, the amounts given in the tables below are for orientation only. These are estimates (as at January 2020) without value-added tax (19%).
|Batteries||see extra table|
|Anchor and small parts||500 EUR / OBS|
|Mobilisation / Demobilisation||1000 EUR / OBS|
|Insurance||3000 EUR / OBS|
|Technical support onboard||650 EUR / day / person + travel expenses|
Depending on the number of batteries, the standard OBS can be used in two configurations, a small version with only one pressure tube (max. 84 cells) and without the outer floating units, and a large (normal) version including two pressure tubes (max. 168 cells) and the outer floating units.
Alkaline cells are suggested to be used for short-term experiments. Battery packages of 48 and 96 cells each supply a deployment duration of 28-118 days (sampling rate 500 Hz) depending on the data logger used.
|Number of cells||Capacity MCS||Capcity 6D6||Price / unit||Configuration|
|48||28 days||59 days||400 EUR||small|
|96||55 days||118 days||800 EUR||small|
Lithium cells are recommended to be used for long-term experiments. Each pressure tube has a capacity of 84 cells. Depending on the data logger used a maximum deployment duration of 432 days can be achieved (sampling rate 50 Hz). The expenses of the lithium cells stongly depend on the number ordered.
|Number of cells||Capacity 6D6||Capacity MCS||Price / cell||Configuration|
|1 x 84||185 days||432 days||15-20 EUR||small|
|2 x 84||370 days||not available||15-20 EUR||large|
Several transports are necessary for an OBS long-term deployment. The OBS, the consumables and the auxiliary equipment (tools, deck units, GPS, laptop) are shipped in 20' maritime containers before the deplopyment. 12 OBS plus auxiliary equipment fit into one container. After the deployment cruise, the auxiliary equipment and eventually the empty transport boxes must be sent back to Bremerhaven, mostly as packaged goods. Befor the second cruise to recover the OBS, the equipment is shipped to the starting harbour, after the cruise the OBS are send back to AWI in containers.
Long-term deployment: 24 OBS, one year deployment, two cruises of 15 days, two technicians per cruise
|Anchor /small parts||24 OBS x 500 EUR||12000 EUR|
|Batteries||24 OBS x 3000 EUR||72000 EUR|
|Insurance||24 OBS x 3000 EUR||72000 EUR|
|Mob / Demob||24 OBS x 1000 EUR||24000 EUR|
|Transports||2 x 2 containers + 2 x packaged goods||20000 EUR|
|Technician||2 technicians x 2 cruises x 15 days x 650 EUR||39000 EUR|
|Sum (without travel expenses and VAT)||239000 EUR|