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 2015) without value-added tax (19%).
|Batteries||see extra table|
|Anchor and small parts||500 EUR / OBS|
|Mobilisation / demobilisation||900 EUR / OBS|
|Insurance||2000 EUR / OBS|
|Technical support onboard||550 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. 96 cells) and without the outer floating units, and a large (normal) version including two pressure tubes (max. 96+132 cells) and the outer floating units. The deep-sea OBS are available only with one pressure tube.
Alkaline cells are suggested to be used for short-term experiments. Battery packages of 48, 96 and 132 cells each can be combined to achieve a maximum deployment duration of 132 days (sampling rate 500 Hz).
|Number of cells||Capacity (500 Hz)||Price / unit||Configuration|
|48||28 days||250 EUR||small|
|96||55 days||500 EUR||small|
|144 (96+48)||83 days||750 EUR||large|
|192 (96+96)||111 days||1000 EUR||large|
|228 (96+132)||132 days||1250 EUR||large|
Lithium cells are recommended to be used for long-term experiments. They are available at packages of 48, 84 and 96 cells each. Combination of these leads to a maximum deployment duration of 456 days (sampling rate 50 Hz). The expenses of the lithium packages stongly depend on the number of ordered units.
|Number of cells||Capacity (50 Hz)||Price / unit||Configuration|
|48||121 days||1100-1200 EUR||small|
|96||243 days||1800-2100 EUR||small|
|144 (96+48)||365 days||2600-3000 EUR||large|
|180 (96+84)||456 days||3200-3600 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 each 14 days, two technicians per cruise
|Anchor / small parts||24 OBS x 500 EUR||12000 EUR|
|Batteries||24 OBS x 2600 EUR||62400 EUR|
|Insurance||24 OBS x 2000 EUR||48000 EUR|
|Mob / Demob||24 OBS x 900 EUR||21600 EUR|
|Transports||2 x 2 container + 2 x packaged goods||20000 EUR|
|Technicians||2 technicians x 2 cruises x 14 days x 550 EUR||30800 EUR|
|Sum (without travel expenses and VAT)||194800 EUR|