That seems to be a name used by the US at that time for a place in
Nankuan Chiang in China.
The citation says:
Commander Fluckey, in an exceptional feat of brilliant deduction and
bold tracking on 23 January, located a concentration of more than 30
enemy ships in the lower reaches of Nankuan Chiang (Mamkwan Harbor).
More information here:
<
http://www.getamap.net/maps/china/china_(general)/_nankuanchiang/>
Nan-kuan Chiang
27°9'25" N 120°26'31" E 22:52 (CST - UTC/GMT+8)
Nan-kuan Chiang (Nan-kuan Chiang) is a lake channel(s) (class H -
Hydrographic) in (China (general)), China (Asia) with the region
font code of Asia/Pacific.
Its coordinates are 27°9'25" N and 120°26'31" E in DMS (Degrees
Minutes Seconds) or 27.1569 and 120.442 (in decimal degrees). Its
UTM position is TL40 and its Joint Operation Graphics reference is
NG51-01.
Current local time is 22:52 **; the sun rises at 09:02 and sets at
21:10 local time (Asia/Shanghai UTC/GMT+8). The standard time zone
for Nan-kuan Chiang is UTC/GMT+8
In 2017 DST starts on - and ends on -.
A Lake channel(s) is that part of a lake having water deep enough
for navigation between islands, shoals, etc..
** 15:52 British Summer time.
That page also has weather forecasts for the location from today
(Tuesday) until (including) Sunday.
Location information with Google Earth view of the place:
http://www.geody.com/geospot.php?world=terra&ufi=-1924177&alc=shc
--
Peter Duncanson, UK
(in alt.usage.english)