1. Profiling Float for Abyssal ocean Deep NINJA
The Tsurumi Seiki Co., LTD.
Profiling Float for Abyssal ocean Deep NINJA
AST-18, Hobart Australia
March 17, 2017

2. Dedicated to Water Observation
The Tsurumi Seiki Co., LTD.
Established in 1928
Based in Yokohama
Dedicated to Water Observation

3. Exclusive facilities of Deep Ninja
The Tsurumi Seiki Co., LTD.
Exclusive facilities of Deep Ninja
Pressure Tank
Pressure tank
Buoyancy adjusting tank

4. History of the Deep NINJA
The Tsurumi Seiki Co., LTD.
History of the Deep NINJA
Collaboration with JAMSTEC starting in 2010
Goal of 4000m depth
Highly programmable
Light hull
Max battery capacity
First deployment in the Southern Ocean in 2013

5. Profiling Float for Abyssal Ocean Deep NINJA
The Tsurumi Seiki Co., LTD.
Profiling Float for Abyssal Ocean Deep NINJA
Deep NINJA has the capability to observe up to a depth of 4000m with a newly developed buoyancy engine and pressure housing.

6. Physical information and components
The Tsurumi Seiki Co., LTD.
Physical information and components 1
Antenna for positioning and data transfer 2
CTD (SBE41CP 7,000m) 3
Ring for lift up when deploy 4
Pressure hull 5
Oil bladder ( inside the case )
Operation Depth
4,000m
Pressure hull
Aluminum alloy
Length
Approx. 210cm (including antenna)
Max. diameter
Approx. 25 cm
Weight
Approx. 50 kg ( in air )
Positioning
GPS positioning at surfacing
Data transfer
IRIDIUM Short Burst Data
Batteries
Lithium battery

7. Programmable Profile Parameters
The Tsurumi Seiki Co., LTD.
Pre-programmable parameters provide Deep NINJA with various movement patterns.
Programmable Profile Parameters
Flexibility to adapt to needs of customer

8. Surface Ice Avoidance Bottom Avoidance
The Tsurumi Seiki Co., LTD.
Pre-programmable parameters provide Deep NINJA with various movement patterns.
Surface Ice Avoidance
Bottom Avoidance

9. Map of Deployments of Deep NINJA
The Tsurumi Seiki Co., LTD.
Map of Deployments of Deep NINJA

10. Status ~2017/2/20 The Tsurumi Seiki Co., LTD. S/N Launch Area Profiles
Last data
Operation Days
Ice Detection Activation
Bottom Reach Activation
Status 1
2012/8/29
North Pacific
2012/8/30
Inactive 2 21
2012/11/1 64 3
2012/12/19
Antarctic 15
2013/6/1
164 4
2012/12/6
Off Newzealand 50
2014/10/19
682 5
2012/12/18 14
2013/7/15
209 6
2012/12/16 27
2014/8/22
614 13 7
2013/7/17 33
2014/6/1
319 8
2014/3/6
2014/3/27 9
2014/3/8 23
2015/5/3
421 18 10
2014/1/23
2014/1/24 11
2014/1/19
2014/6/20
152 12
2014/3/25 61
2014/1/27
2015/3/24 40
2016/2/4
741
2014/12/6 43
2017/2/15
802
Active 16
2016/1/31
South-west of Indian
2016/11/18
292 17
2016/2/2 20
2017/2/8
372
2016/3/2
2016/9/10
557 19
2017/2/20

11. Turbulence Probe Collaboration with Rockland Scientific
The Tsurumi Seiki Co., LTD.
Turbulence Probe Collaboration with Rockland Scientific
Based on a request from Tokyo University
Dr. Yasuda
Need for the study of Turbulence in the deep ocean
Collaboration with Rockland Scientific to adapt their sensor technology on a profiling float

12. Turbulence Probe Collaboration with Rockland Scientific
The Tsurumi Seiki Co., LTD.
Turbulence Probe Collaboration with Rockland Scientific
Fast Temperature Probe : For measuring turbulence temperature fluctuations.
Shear Probe : For measuring turbulence velocity fluctuations.
Probe Holder
Tube : For prevent the flow of the CTD pump
Bulkhead Connector : For interfacing data logger (USB port).

13. Testing observation of turbulence float in Sagami Bay August 2016
The Tsurumi Seiki Co., LTD.
Testing observation of turbulence float in Sagami Bay August 2016
Launch of turbulence float
Sagami Bay
Izu Peninsula
Observation sea area
Recovering by boat
8dives 1,500db max

14. Data Logging in Sagami Bay
The Tsurumi Seiki Co., LTD.
Data Logging in Sagami Bay

15. Deep Ninja with Optical DO Sensor
The Tsurumi Seiki Co., LTD.
Deep Ninja with Optical DO Sensor
Dual Element Antenna
CTD Sensor(SBE41CP:Sea Bird)
Optical DO Sensor(SBE63:Sea Bird)

16. Reliability and Quality
The Tsurumi Seiki Co., LTD.
Reliability and Quality
Deep Floats have greater challenges
Increased pressures
Higher power consumption
Greater risk for bottom interference
To date for the Deep NINJA
High variability of success
Difficult to assess the source of malfunction
Highest priority for Deep NINJA team

17. Future Plans for Deep NINJA
The Tsurumi Seiki Co., LTD.
Future Plans for Deep NINJA
Increased Battery Capacity and expected number of Profiles
Higher Reliability
Additional sensor capabilities

18. THE TSURUMI SEIKI CO., LTD.
Head Office / Main Plant / Service Center
Shirakawa Factory
TSK America
Liaison Office (INDIA)