KEY SPECIFICATIONS

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Height (excluding main sheave wheel)
5.8 m
Deck footprint (vertical, legs raised)
2.3 m x 2.3m
Weight in air
Approximately 10 tonnes
Weight in water
Approximately 6 tonnes
Drill stowed for shipping
1 x 20' shipping container
Maximum operating depth below sea level
2,000 m
Maximum sampling penetration depth
125 m
Maximum casing depth
40 m
Drill tool size
B
Thin Walled Sampling Tube diameter 54mm
Thin Walled Sampling Tube length 700mm
Piston Sampler  

core diameter

44mm

core length

 2.75m
Rotary Diamond Drill  

Sample diameter

 44mm

Run Length

 2.70m
Maximum push thrust
6 tonnes + suction pressure
Rotary coring power
75 kW (100 hp)
In Situ Testing  

Data transmission

 Acoustic transmission from probe via drill string to fibre optics in umbilical

CPT capability

 Penetration to 100m below mudline and 25Mpa water pressure

CPT diameter x length

 36mm x 2,000mm, followed by drill rods

BPT capability

Penetration to 100m below mudline and 25MPa water pressure

BPT diameter x length

60mm diameter steel sphere attached to a 200mm long x 20mm diameter push rod

Hydrocarbon Analysis System

Methane sensitivity 300nmol/l to 1mmol/l
Two rotary magazines hold PROD's core barrels, in situ
testing tools and casing. The magazines can carry 260m of tools, allowing a practical penetration capability of plus 100m pending sampling type.

Ancillary features include pan and tilt cameras for visual inspection of all drill operations, an altimeter, and thrusters for position and heading control during landing, recovery or repositioning.

The position of the PROD frame can be measured to an accuracy of 25mm relative to the mudline.

Key components of the PROD system are protected internationally by patents,
patents pending and patent applications.
All drill related operations are hydraulically driven. Drill tools holding core are placed back into the magazines following each run and are received from PROD when PROD is retrieved to the ship.