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Revised Jun 28 2021

Bounty Logbook Mar 16, 1788

109)

HKFCoursesWindsTher.Rems: Sunday 16th. March 1788 Observations
124WSWSo Modt & fair Wr.
224Saw five land Birds of the Hawk kind
314
41255½°Light Winds
51SWSSE At 5h:33′ Latd 43°.. 4′..00″ So
Longd. T Keeper 58..44:45 W
Longd from Aldebran West
of the redd to same time
Ramsdens B 58°23′:30″
 Do.   C 58:18..45
Troughton H 58:14..30 
 Mean  58:16:05 W
61""75 fms. Very fine Sand of a greenish colour
71SSWSE
81""58¼°Fine Night out 1st Reefs
91
101
11"CalmWhale seen
12
11SSWSE48½°
216
317
422""49°Cloudy Wr.
524NEBNUp M. T. Gt yard & set T. Gt Lower & Topmt Steering Sails
63
734NNE
84251°Dark Cloudy Wr. saw a ship in the WNW standing to the North.
956
1056Mustered and Saw every person Clean
1152
124""54¼°Dark Cloudy Wr. and a Modt Breeze Rock weed and Whales seen but few Birds
55
7593
7648
 LatitudeLongitudeRems at Noon
CourseDist.Obsd.D. R.D. R.T. K.L. & T. K. 
So53°W52None43°..34′So63°..07′W  

(110

Lunar Observations since the 12th. March to the 16th opposite reduced to 5h:33′ by applying the difference of Longitude by the Time Keeper.

Time
 When
  1788
Longitude
  by
Time Keeper
Longitude
  by
Observation
Correction to be
appld to reduce them to
5h..33′ of the
16th opposite
True Longitude
by Observn at 5h:33
of the 16th
Longitude
turned into
Time
T Keeper fast
for Mean Time
at Greenwich
March 13th57°..33′..09″ 57°..24′..15″W 1..11..36 58°..35′..51″W
57..22..31 58..34..06
57..35..15 58..46..51
57..48..45 57..48..15 0..56..00 58..44..15
57..51..00 58..47..38
58..00..45 58..56..45
15th58..04..07 57..52..45 0..40..38 58..33..23
58..09..30 58..50..08
58..16..11 58..53..38
16th58..44..45 58..23..30 58..23..38
58..14..30 58..41..30
58..10..15 58..10..15
58..11..45 58..11..45
58..16..45 58..10..45
Mean Longd. at 5h..33′ of the 16th of March 58..34..14 = 3:54:16:56 } 0′14″:4″′
 Longd. by Time Keeper at the same time 58..44..15 = 3:54:59:
.. ..42..4   
 Longd. by Observation—..10..31 Et of Time Keeper
 Longd by Observation on the 17th Feby less than Time Keeper—..16..25 Et
— .. 5..54 in Longd. Et

which the Time Keeper has lost in 28 days and its Rate by this is loosing on Mean Time pr 24 hours .5″,57 equal to one tenth of a second nearly, and I now consider it fast for mean time at Greenwich the 15th Noon 0′..42″..4″′.


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