Cho Oyu | 2003 NW side

A Japan expedition to Cho Oyu in 2003 via NW side, led by Shinji Tamura. Summit reached on 27th September 2003. 9 members recorded.

Expedition Details

Field	Value
ID	4470
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY03326
Peak ID	CHOY
Year	2003
Season	3
Host Country	2
Route 1	NW side
Route 2	-
Route 3	-
Route 4	-
Nationality	Japan
Leaders	Shinji Tamura
Sponsor	Active Mountain Cho Oyu Expedition (on Brice permit)
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	-
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	-
Approach	-
Basecamp Date	2003-09-01
Summit Date	2003-09-27
Summit Time	0830
Summit Days	26
Total Days	29
Termination Date	2003-09-30
Termination Reason	1
Termination Notes	-
High Point (m)	8188
Traverse	False
Ski	False
Paraglide	False
Camps	3
Fixed Rope (m)	0
Total Members	6
Summit Members	6
Member Deaths	0
Total Hired	3
Summit Hired	3
Hired Deaths	0
No Hired	False
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Taken	False
O2 Unknown	False
Other Summits	-
Campsites	BC(01/09),ABC(05/09),C1(11/09),C2(16/09),C3(26/09),Smt(27/09)
Route Notes	Summit party left C3 3:30 am NST, on top 8:30 to 9:00 am and return to C2 at 2:30-3:30 pm. Oxygen used by all members except Kuraoka, who used none at all. Saito, Shiroi and Toshiriko Tamura used it sleeping in C2; sleeping in C3, climbing to top and down to C2; Shinji Tamura and Yoshida in C3 to top to C3; Sherpas used intermittently. All summiters saw Everest, etc from their summit. Sherpa summiters: Chhiri, 2/6/73, Thamo, Everest X2, Cho Oyu X1 Phur Gyalzen, 3/10/73, Kharikhola, Everest X1 This team was on Russell Brice's permit.
Accidents	-
Achievement	-
Agency	Mountain Experience
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	False
Primary ID	-
Checksum	2458288
Year	2003
Summit Success	True
O2 Summary	Used
Route (lowercase)	nw side

Members

Field	Value
ID	34687
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03326
Member ID	02
Peak ID	CHOY
Year	2003
Season	3
First Name	Hiroyuki
Last Name	Kuraoka
Sex	M
Age	0
Birth Date	-
Year of Birth	1961
Calculated Age	42
Citizenship	Japan
Status	Deputy Leader
Residence	Abiko, Chiba, Japan
Occupation	Office clerk
Leader	False
Deputy	True
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2003-09-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2435488
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	hiroyuki kuraoka
Year of Birth	1961
Year	2003
Age at Expedition	42
Role	Deputy

Field	Value
ID	34688
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03326
Member ID	03
Peak ID	CHOY
Year	2003
Season	3
First Name	Shokichi
Last Name	Saito
Sex	M
Age	0
Birth Date	-
Year of Birth	1954
Calculated Age	49
Citizenship	Japan
Status	Climber
Residence	Fukui-shi, Fukui, Japan
Occupation	Office clerk
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2003-09-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	Sleeping in C2 & C3, climbing to top, down to C2
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2432914
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	shokichi saito
Year of Birth	1954
Year	2003
Age at Expedition	49
Role	Member

Field	Value
ID	34689
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03326
Member ID	04
Peak ID	CHOY
Year	2003
Season	3
First Name	Kazumi
Last Name	Shirai
Sex	F
Age	0
Birth Date	-
Year of Birth	1943
Calculated Age	60
Citizenship	Japan
Status	Climber
Residence	Itami, Hyogo, Japan
Occupation	Housewife
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	False
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2003-09-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	Sleeping in C2 & C3, climbing to top, down to C2
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2428952
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	kazumi shirai
Year of Birth	1943
Year	2003
Age at Expedition	60
Role	Member

Field	Value
ID	34690
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03326
Member ID	01
Peak ID	CHOY
Year	2003
Season	3
First Name	Shinji
Last Name	Tamura
Sex	M
Age	0
Birth Date	-
Year of Birth	1966
Calculated Age	37
Citizenship	Japan
Status	Leader
Residence	Zermatt, Valais, Switzerland
Occupation	Tour guide
Leader	True
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2003-09-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	In C3 to top to C3
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	(1966-2023) Died 11 Aug 2023 on unnamed peak in Pakistan (later disappeared after falling)
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2437320
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	shinji tamura
Year of Birth	1966
Year	2003
Age at Expedition	37
Role	Leader

Field	Value
ID	34691
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03326
Member ID	05
Peak ID	CHOY
Year	2003
Season	3
First Name	Toshihiko
Last Name	Tamura
Sex	M
Age	0
Birth Date	-
Year of Birth	1958
Calculated Age	45
Citizenship	Japan
Status	Climber
Residence	Ota, Gunma, Japan
Occupation	Farmer
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2003-09-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	Sleeping in C2 & C3, climbing to top, down to C2
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2434223
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	toshihiko tamura
Year of Birth	1958
Year	2003
Age at Expedition	45
Role	Member

Field	Value
ID	34692
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03326
Member ID	06
Peak ID	CHOY
Year	2003
Season	3
First Name	Takenori
Last Name	Yoshida
Sex	M
Age	0
Birth Date	-
Year of Birth	1948
Calculated Age	55
Citizenship	Japan
Status	Climber
Residence	Amagasaki, Hyogo, Japan
Occupation	Clerk
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	False
Sherpa	False
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2003-09-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	True
O2 Descent	False
O2 Sleep	True
O2 Medical	False
O2 Notes	In C3 to top to C3
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2430783
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	takenori yoshida
Year of Birth	1948
Year	2003
Age at Expedition	55
Role	Member

Field	Value
ID	34693
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03326
Member ID	08
Peak ID	CHOY
Year	2003
Season	3
First Name	Chhiri (Ang Chhiring)
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1973
Calculated Age	30
Citizenship	Nepal
Status	H-A Worker
Residence	Thamo, Khumbu
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	True
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2003-09-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	2nd ascent of Cho Oyu
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2439797
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	chhiri (ang chhiring) sherpa
Year of Birth	1973
Year	2003
Age at Expedition	30
Role	Hired

Field	Value
ID	34694
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03326
Member ID	09
Peak ID	CHOY
Year	2003
Season	3
First Name	Phur Gyalzen
Last Name	Sherpa
Sex	M
Age	0
Birth Date	-
Year of Birth	1973
Calculated Age	29
Citizenship	Nepal
Status	H-A Worker
Residence	Kharikhola, Solukhumbu
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	True
Tibetan	False
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2003-09-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	-
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2439920
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	phur gyalzen sherpa
Year of Birth	1973
Year	2003
Age at Expedition	30
Role	Hired

Field	Value
ID	34695
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY03326
Member ID	07
Peak ID	CHOY
Year	2003
Season	3
First Name	Tenzing (Tenzin, Den Zeng)
Last Name	-
Sex	M
Age	0
Birth Date	-
Year of Birth	1984
Calculated Age	19
Citizenship	China
Status	H-A Worker
Residence	Dontso, Nyalam Dzong, Tibet, China
Occupation	-
Leader	False
Deputy	False
Basecamp Only	False
Not to BC	False
Support	False
Disabled	False
Hired	True
Sherpa	False
Tibetan	True
Summit Success	True
Claimed	False
Disputed	False
Solo	False
Traverse	False
Ski	False
Paraglide	False
Speed	-
High Point (m)	True
Personal High Point (m)	8188
Summit Date 1	2003-09-27
Summit Date 2	-
Summit Date 3	-
Summit Time 1	-
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	0
Ascent 2	0
Ascent 3	0
O2 Used	True
O2 None	False
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Notes	-
Death	False
Death Date	-
Death Time	-
Death Type	0
Death Height (m)	0
Death Class	0
AMS	False
Weather	False
Injury	False
Injury Date	-
Injury Time	-
Injury Type	0
Injury Height (m)	0
Death Notes	-
Member Notes	1st 8000er
Necrology	-
Summit Bid	5
Summit Term	1
HCN	0
Checksum	2443738
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	tenzing (tenzin, den zeng)
Year of Birth	1984
Year	2003
Age at Expedition	19
Role	Hired

9 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Hiroyuki Kuraoka	M	1961	Japan	Deputy Leader	Abiko, Chiba, Japan	Office clerk	Details Other expeditions
Shokichi Saito	M	1954	Japan	Climber	Fukui-shi, Fukui, Japan	Office clerk	Details Other expeditions
Kazumi Shirai	F	1943	Japan	Climber	Itami, Hyogo, Japan	Housewife	Details Other expeditions
Shinji Tamura	M	1966	Japan	Leader	Zermatt, Valais, Switzerland	Tour guide	Details Other expeditions
Toshihiko Tamura	M	1958	Japan	Climber	Ota, Gunma, Japan	Farmer	Details Other expeditions
Takenori Yoshida	M	1948	Japan	Climber	Amagasaki, Hyogo, Japan	Clerk	Details Other expeditions
Chhiri (Ang Chhiring) Sherpa	M	1973	Nepal	H-A Worker	Thamo, Khumbu	-	Details Other expeditions
Phur Gyalzen Sherpa	M	1973	Nepal	H-A Worker	Kharikhola, Solukhumbu	-	Details Other expeditions
Tenzing (Tenzin, Den Zeng)	M	1984	China	H-A Worker	Dontso, Nyalam Dzong, Tibet, China	-	Details Other expeditions

References

0 recorded references.