Diodora : Seabed Truncated Pyramid

Diodora : Seabed truncated pyramid

Reliable solution to deploy your instruments on the seabed

DynamOcean’s seafloor platforms are chosen Product features when a reliable deployment is required within ex-  Gimbal mounts for one or two acoustic Doppler profilers treme environments (coastal sites exposed to (ADP). Optional end stops (typical 15° ) and locking systems huge swell or strong tidal streams with rocky sea- beds).  Compatible with most ADPs

Diodora’s design has beneficiated from 10 years of  Easy insertion of the ADP inside the frame experience with deployments of oceanographic  Other mounts for battery pack, ARGOS beacon, flash-light instruments. beacon, CTDs, Doppler velocimeter, short range Doppler profiler, acoustic modem, optical modem, etc.

 Two redundant acoustically released pop-up buoy systems increasing the chance of trouble-free recovery

 Designed for low-cost and user-friendly acoustic releases mounted vertically

 2-in-1 with optional tilt indication (±15° or ±30°)

 No need for remote-head releases

 Integration of your own acoustic release possible

 Standard and low cost pop-up buoys (trawl floats)

 Aluminium or Stainless steel

 Tested eye-bolts on the top for deployment and recovery

 Large welded ring for recovery by ROV hook

 Detachable feet with custom heights depending on seabed features

 Floor storage for lead ingots (low-cost lead)

 Optional concrete ballast

 Great stability truncated pyramid design

 Three-point contact with the seabed

 Fully welded or bolted assembly for a compact shipment

 Available in four standard sizes and custom sizes

“Exploring the ocean dynamics”

DynamOcean SARL, Kefiaoueg, 22140 Bégard, France | +33 6 59 33 72 25 | [email protected] | www.dynamocean.com Technical specifications Diodora unit L M S XS Length cm 290 235 175 155 Width cm 251 204 152 134 Height without feet cm 55 55 41 41 Wall thickness - stainless steel mm 3.0 3.0 2.0 2.0 Wall thickness - aluminium mm 4.0 4.0 3.0 3.0 Mass in air without ballast - stainless steel kg 320 210 87 60 Mass in air without ballast - aluminium kg 145 95 44 31 Maximum ballast (lead) kg 720 540 360 180 Recovery float diameter (cm) cm 45 36 28 20 Recovery float buoyancy (kg) kg 30 18 8 3 Dyneema rope diameter (mm) mm 12 10 8 6 Dyneema rope length (m) mm 100 100 100 100 Dyneema maximum breaking force (kN) kN 137 97 62 35 Dyneema rope safety factor 13 13 14 15 Corrosion protection Zinc Anodes

DynamOcean SARL, Kefiaoueg, 22140 Bégard, France | +33 6 59 33 72 25 | [email protected] | www.dynamocean.com Patella : Seabed lattice pyramid

Reliable solution to deploy your instruments on the seabed

DynamOcean’s seafloor platforms are chosen Product features when a reliable deployment is required within ex-  Fixed mount for one high resolution acoustic Doppler pro- treme environments (coastal sites exposed to filers (HR-ADP) at the top of pyramid. huge swell or strong tidal streams with rocky sea- beds).  Compatible with straight-looking and side-looking HR-ADPs Patella’s design has beneficiated from 10 years of experience with deployments of oceanographic  Lattice construction minimises the flow disturbance due to the structure to allow measurements inside the pyramid instruments.  Other mounts for battery pack, ARGOS beacon, flash-light beacon, CTDs, Doppler velocimeter, standard acoustic Dop- pler profiler, acoustic modem, optical modem, sediment trap etc.

 Two redundant acoustically released pop-up buoy systems increasing the chance of trouble-free recovery

 Designed for low-cost and user friendly acoustic releases mounted vertically

 2-in-1 with optional tilt indication (±15° or ±30°)

 No need for remote-head releases

 Standard and low cost pop-up buoys (trawl floats)

 Aluminium or Stainless steel

 Tested eye-bolts on the top for deployment and recovery

 Large welded ring for recovery by ROV hook

 Detachable feet with custom heights depending on seabed features

 Bolts to attach lead ingots (low-cost lead)

 Optional concrete ballast

 Great stability truncated pyramid design

 Three-point contact with the seabed

 Available in four standard sizes and custom sizes

 Fully welded or bolted assembly for a compact shipment

“Exploring the ocean dynamics”

DynamOcean SARL, Kefiaoueg, 22140 Bégard, France | +33 6 59 33 72 25 | [email protected] | www.dynamocean.com Technical specifications Patella unit L M S XS Length cm 290 235 175 155 Width cm 251 204 152 134 Height cm 300 250 200 150 Wall thickness - stainless steel mm 4.0 4.0 3.0 3.0 Wall thickness - aluminium mm 5.0 5.0 4.0 4.0 Mass in air without ballast - stainless steel kg 487 320 132 92 Mass in air without ballast - aluminium kg 207 136 60 42 Maximum ballast (lead) kg 900 720 540 360 Recovery float diameter (cm) cm 45 36 28 20 Recovery float buoyancy (kg) kg 30 18 8 3 Dyneema rope diameter (mm) mm 12 10 8 6 Dyneema rope length (m) mm 100 100 100 100 Dyneema maximum breaking force (kN) kN 137 97 62 35 Dyneema rope safety factor - stainless steel 10 10 9 8 Dyneema rope safety factor - aluminium 13 12 11 9 Corrosion protection Zinc Anodes

DynamOcean SARL, Kefiaoueg, 22140 Bégard, France | +33 6 59 33 72 25 | [email protected] | www.dynamocean.com