Cho Oyu | 1995 NW side from N

A Japan expedition to Cho Oyu in 1995 via NW side from N, led by Hirofumi Konishi. Summit reached on 9th May 1995. 3 members recorded.

Expedition Details

Field	Value
ID	1430
Imported	2026-03-06 18:04:49.359634
Expedition ID	CHOY95104
Peak ID	CHOY
Year	1995
Season	1
Host Country	2
Route 1	NW side from N
Route 2	-
Route 3	-
Route 4	-
Nationality	Japan
Leaders	Hirofumi Konishi
Sponsor	Japan Cho Oyu Research Expedition 1995
Success 1	True
Success 2	False
Success 3	False
Success 4	False
Ascent 1	163
Ascent 2	-
Ascent 3	-
Ascent 4	-
Claimed	False
Disputed	False
Countries	-
Approach	-
Basecamp Date	1995-04-13
Summit Date	1995-05-09
Summit Time	1240
Summit Days	26
Total Days	0
Termination Date	-
Termination Reason	1
Termination Notes	-
High Point (m)	8188
Traverse	False
Ski	False
Paraglide	False
Camps	2
Fixed Rope (m)	0
Total Members	2
Summit Members	2
Member Deaths	0
Total Hired	1
Summit Hired	1
Hired Deaths	0
No Hired	False
O2 Used	False
O2 None	True
O2 Climb	False
O2 Descent	False
O2 Sleep	False
O2 Medical	False
O2 Taken	False
O2 Unknown	False
Other Summits	Climbed Island Peak
Campsites	BC(13/04),ABC(16/04,5700m),C1(23/04,6400m),C2(02/05,7000m),Smt(09/05)
Route Notes	After C2 on 2 May to ABC for 3 days rest. Started from ABC 7th May to C1, to C2 8th May and top 9th May. 9th May from C2 at 2 am and on top 12:40 pm, on top windy and very cloudy, could not see Everest but followed German's member wands for 1-1/2 hrs on plateau, returned to C2 6 pm; 10th May to ABC.
Accidents	None
Achievement	-
Agency	Cosmo Treks
Commercial Route	True
Standard Route	True
Primary Route	False
Primary Member	False
Primary Reference	False
Primary ID	-
Checksum	2455577
Year	1995
Summit Success	True
O2 Summary	None
Route (lowercase)	nw side from n

Field	Value
ID	5400
Imported	2026-03-06 18:06:05.675609
Expedition ID	CHOY95104
Member ID	02
Peak ID	CHOY
Year	1995
Season	1
First Name	Masayoshi
Last Name	Yamamoto
Sex	M
Age	0
Birth Date	-
Year of Birth	1957
Calculated Age	37
Citizenship	Japan
Status	Climber
Residence	Katsuura, Chiba, Japan
Occupation	University student of physical education
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	1995-05-09
Summit Date 2	-
Summit Date 3	-
Summit Time 1	1240
Summit Time 2	-
Summit Time 3	-
Route 1	1
Route 2	0
Route 3	0
Ascent 1	165
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	2434069
Summit Note 1	-
Summit Note 2	-
Summit Note 3	-
Death Route	-
Name (lowercase)	masayoshi yamamoto
Year of Birth	1957
Year	1995
Age at Expedition	38
Role	Member

3 recorded members.

Name	Sex	Year of Birth	Citizenship	Status	Residence	Occupation
Hirofumi Konishi	M	1962	Japan	Leader	Tokyo, Japan	Professional alpinist	Details Other expeditions
Masayoshi Yamamoto	M	1957	Japan	Climber	Katsuura, Chiba, Japan	University student of physical education	Details Other expeditions
Pemba Tshering Sherpa	M	1943	Nepal	H-A Worker	Thamo, Khumbu	-	Details Other expeditions

0 recorded references.