A Recovery of a Drowning Victim from 289 feet beneath the frozen Lake Prosperous, Yellowknife, January 2005 By SubOceanic Sciences
The following pictures and Report depict a drowning victim's body recovery Operation in Yellowknife, North West Territories early January 2005 by SubOceanic Sciences Canada Ltd.
SubOceanic Sciences Canada Ltd. ROV Drowning Victim
Recovery Operation Report
Location of Recovery : Lake Prosperous, Yellow Knife, North West Territories.
Nature of Recovery : Drowning Victim Recovery
Depth of water in Lake : 88 meters / 289 feet
Nature of lake bed : Very fine silt over a clay and mud base in excess of 3’ feet in depth
ROV Supervisor/Pilot/Tech : Michael D. Wood
ROV Pilot/Tech/Tender : Graeme Anderson
ROV System & Serial Number : Seaeye Falcon ~ Number 1238
Client : Northern Underwater Services ~ NUS
Chronological Events ~
Date Events
29th Dec 04 Test and mobilize ROV system into Yellow Knife from Victoria Airport. Arrive Hotel in Yellow Knife at 04:00 a.m.
Maximum Depth : N/A
Total ROV Dive Time : N/A
Total Hours Worked / Travelled : 12 hours 4 mins.
30th Dec 04 Search for drowning victim Mr G. Robinson, with ROV and onboard Tritech Sea Prince Sector scanning sonar with 150 meter range under ice and on lake bed. Locate truck and make several attempts to open doors and break side windows with manipulator causing damage to manipulator.
Maximum Depth : 87 meters
Total ROV Dive Time : 5 hours 15 minutes
Total Hours Worked / Travelled : 9 hours 34 minutes
31st Dec 04 Attach 1.5 inch winch wire to front crane boom rest stanchion forward of engine with ROV. Truck winched to 30 meter depth but wire unfortunately parted. The objective of this was to bring the truck into diving range to allow a diver to open the truck cab doors and verify casualty is not inside.
(31st Dec 04) The truck lands 45 feet from original location on lake bed with wheels embedded 2-3 feet in lake bed mud. ROV surveys and searches new location area of truck. Family member instructs to return to original truck location and search there.
Maximum Depth : 88 meters
Total ROV Dive Time : 10 hours 10 minutes
Total Hours Worked / Travelled : 16 hours
01st of Jan 05 Open both doors of truck cab with surface oriented rope to a steel hook carried by ROV and inspect interior of cab, casualty not located inside truck.
Search under ice out to 450’feet, commence 360 degree circular sweeps decreasing increments inwards by 20 feet each sweep.
Maximum Depth : 88 meters
Total ROV Dive Time : 7 hours 10 minutes
Total Hours Worked / Travelled : 11 hours 35 minutes
02nd Jan 05 Continue & complete circular sweeps under ice. Sidescan sonar from Vancouver now set up on site, continue search on lake bed under guidance of Sidescan sonar/operator. Identify and remove debris and false targets from lake bed to leave only body as a potential target.
Locate body at 18:00 hrs. Recover body and deliver by ROV to 20 feet of water where diver secures body with rope and is recovered onto the surface ice at 20:13 hours.
Maximum Depth : 88 meters
Total ROV Dive Time : 11 hours 20 minutes
Total Hours Worked / Travelled : 15 hours 20 minutes
03rd Jan 05 De-mobilise ROV & sidescan system, pack up and secure units and return to Vancouver Island departing Yellow Knife at 16:00 hours.
Arrive Duncan at 20:00 hours.
Maximum Depth : N/A
Total ROV Dive Time : N/A
Total Hours Worked / Travelled : 11 hours
Mike D. Wood
Director Marketing and Operations
SubOceanic sciences Canada Ltd.
Tel : 1 250 748 5156
Cell: 1 250 7011058
06th January 2005
Email: mike-bevwood@shaw.ca
Breaking out newly formed ice on an ROV access hole
The Falcon ROV slides a lifting hook into the door handle of the truck to open the door and check interior for drivers body
The ROV inside the Truck to check for the drivers body, he was subsequently located & recovered from a position 30 meters away from the passenger door on the lake bed.
Recovering the Falcon ROV at night from Lake Prosperous
A Diver assisting in the securing of the body when recoverd to within 20 feet of the surface by the Falcon ROV
Loading the SubOceanic ROV system aboard a Dash 8 De-Havilland for return to Vancouver Island
SubOceanic Sciences Canada Ltd. ROV Drowning Victim
Recovery Operation Report
Location of Recovery : Lake Prosperous, Yellow Knife, North West Territories.
Nature of Recovery : Drowning Victim Recovery
Depth of water in Lake : 88 meters / 289 feet
Nature of lake bed : Very fine silt over a clay and mud base in excess of 3’ feet in depth
ROV Supervisor/Pilot/Tech : Michael D. Wood
ROV Pilot/Tech/Tender : Graeme Anderson
ROV System & Serial Number : Seaeye Falcon ~ Number 1238
Client : Northern Underwater Services ~ NUS
Chronological Events ~
Date Events
29th Dec 04 Test and mobilize ROV system into Yellow Knife from Victoria Airport. Arrive Hotel in Yellow Knife at 04:00 a.m.
Maximum Depth : N/A
Total ROV Dive Time : N/A
Total Hours Worked / Travelled : 12 hours 4 mins.
30th Dec 04 Search for drowning victim Mr G. Robinson, with ROV and onboard Tritech Sea Prince Sector scanning sonar with 150 meter range under ice and on lake bed. Locate truck and make several attempts to open doors and break side windows with manipulator causing damage to manipulator.
Maximum Depth : 87 meters
Total ROV Dive Time : 5 hours 15 minutes
Total Hours Worked / Travelled : 9 hours 34 minutes
31st Dec 04 Attach 1.5 inch winch wire to front crane boom rest stanchion forward of engine with ROV. Truck winched to 30 meter depth but wire unfortunately parted. The objective of this was to bring the truck into diving range to allow a diver to open the truck cab doors and verify casualty is not inside.
(31st Dec 04) The truck lands 45 feet from original location on lake bed with wheels embedded 2-3 feet in lake bed mud. ROV surveys and searches new location area of truck. Family member instructs to return to original truck location and search there.
Maximum Depth : 88 meters
Total ROV Dive Time : 10 hours 10 minutes
Total Hours Worked / Travelled : 16 hours
01st of Jan 05 Open both doors of truck cab with surface oriented rope to a steel hook carried by ROV and inspect interior of cab, casualty not located inside truck.
Search under ice out to 450’feet, commence 360 degree circular sweeps decreasing increments inwards by 20 feet each sweep.
Maximum Depth : 88 meters
Total ROV Dive Time : 7 hours 10 minutes
Total Hours Worked / Travelled : 11 hours 35 minutes
02nd Jan 05 Continue & complete circular sweeps under ice. Sidescan sonar from Vancouver now set up on site, continue search on lake bed under guidance of Sidescan sonar/operator. Identify and remove debris and false targets from lake bed to leave only body as a potential target.
Locate body at 18:00 hrs. Recover body and deliver by ROV to 20 feet of water where diver secures body with rope and is recovered onto the surface ice at 20:13 hours.
Maximum Depth : 88 meters
Total ROV Dive Time : 11 hours 20 minutes
Total Hours Worked / Travelled : 15 hours 20 minutes
03rd Jan 05 De-mobilise ROV & sidescan system, pack up and secure units and return to Vancouver Island departing Yellow Knife at 16:00 hours.
Arrive Duncan at 20:00 hours.
Maximum Depth : N/A
Total ROV Dive Time : N/A
Total Hours Worked / Travelled : 11 hours
Mike D. Wood
Director Marketing and Operations
SubOceanic sciences Canada Ltd.
Tel : 1 250 748 5156
Cell: 1 250 7011058
06th January 2005
Email: mike-bevwood@shaw.ca
Breaking out newly formed ice on an ROV access hole
The Falcon ROV slides a lifting hook into the door handle of the truck to open the door and check interior for drivers body
The ROV inside the Truck to check for the drivers body, he was subsequently located & recovered from a position 30 meters away from the passenger door on the lake bed.
Recovering the Falcon ROV at night from Lake Prosperous
A Diver assisting in the securing of the body when recoverd to within 20 feet of the surface by the Falcon ROV
Loading the SubOceanic ROV system aboard a Dash 8 De-Havilland for return to Vancouver Island
posted by subocean at 11:31 AM
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