|Coring Device||Sample Diameter||Max Length*||Approximate Coring Device Weight|
|MARSSAM Jumbo Piston Core||10.16 cm||30 m||3500 – 6000 lbs|
Piston cores recover the longest soft sediment cores of any of the equipment MARSSAM provides. The piston core drops at a free fall around a stationary piston that reduces internal friction allowing for longer cores. Jumbo piston cores recover samples of 10.16 cm diameter and up to 30m in length in ideal conditions. The free-fall is triggered by a ~3 m gravity core (“trigger core”) which also provides a 10.16 cm diameter sample of the upper sediment layers.
Marssam also has a smaller piston corer that provides 6.35 cm diameter samples up to 25 m long.