Admiralty distance tables pacific ocean volume3

If through Tathong Channel, between Paracellslands and Macclesfield Bank, and W of Dangerous Ground, add 4: if through Palawan Passage, add 18.. If through Guimaras Strait and Anauayan C

NP 350(3)

ADMIRAL TV DISTANCE TABLES

PACIFIC OCEAN

covering Pacific Ocean and Seas bordering it

FIRST EDITION 1984

Published by The Hydrographer of the Navy

This first edition of Admiralty Distance Tables-Pacific Ocean has been prepared by Lieutenant Commander C J de

C Scott, RN, and contains distance tables for the Pacific Ocean and Seas bordering it The tables have been compiled

from the latest information in the Hydrographic Department, the distances have been completely re-worked, the

areas re-arranged and the information presented in a different format from Admiralty Distance Tables Volume V 2nd

Edition 1953, which it supersedes.

D W Haslam Rear-Admiral Hydrographer of the Navy

General Notes on Tables in this Volume

Table 1 South China Sea

Table 2 Palawan Passage

Table 3 Sulu and Celebes Seas

Table 4 Eastern China Sea and Yellow Sea

Table 5 Bo Hai

Table 6 Seto Naikai

Table 7 Sea of Japan

Table 8 Sea of Okhotsk

Table 9 Bering Sea

Table 10 British Columbia

Table 11 Australia-NE Coast-Inner Route

Table 12 Pacific Ocean

Table 13 Pacific Westbound Routes

v

vii

xxii1

43

45

51

55 99

113133

iv

LIST OF DIAGRAMS

1 Shape of the Earth

2 Meridional Parts

3 Mean and Middle Latitudes

4 Great circle track

5 Composite Sailing

Index Chart 1-Diagram of Index Charts

Index Chart 2-South China Sea and Palawan Passage

Index Chart 3-Sulu and Celebes Seas and Palawan Passage

Index Chart 4-Eastern China Sea and Yellow Sea and Bo Hai

Index Chart 5-Sea of Japan

Index Chart 6-Sea of Okhotsk

Index Chart 7 -Bering Sea and Seto Naikai

Index Chart 8-British Columbia

Index Chart 9-Australia-NE Coast-Inner Route

Page

ixxiixiiixivxix

IndexChart sectionfollowing page 145

v

ADMIRAL TV DISTANCE TABLES

PACIFIC OCEAN

INTRODUCTION

1 Selecting a route The routes used for distances in these tables, which are the shortest routes, are not

necessarily the quickest or most suitable for a particular passage: other routes may offer more favourable currents or

conditions of sea, swell or weather The choice of the best route is described in Ocean Passages for the World and the

various volumes of Admiralty Sailing Directions: Routeing Charts show some of the principal commonly-used routes Essential to this choice, is a knowledge of the shortest distance between the point of departure and destination, which can then be modified as circumstances require It is these shortest navigable distances which are given in these tables.

Since the Pacific Ocean is of such a size that great circle routes diverge appreciably from rhumb line routes, and the straits between the many islands bordering its Nand W shores often offer alternative routes differing little in distance, the shortest route between two places is not always immediately apparent To help select appropriate connecting points, near the great circle route between two stations, with which to enter the tables, Gnomonic Charts can sometimes be consulted to advantage.

Where traffic separation schemes exist, they have not necessarily been followed.

mentioned in the notes, will be found in the Gazetteer.

Most of the terminal positions are pilot grounds or anchorages given in Admiralty Sailing Directions, but some are positions on the most commonly-used tracks in the entrances to large ports, rivers, or inlets containing a number of ports Consequently the named terminal position in the tables may be an appreciable distance from the place after which it is named, or from the ship's actual berth.

Where there is not this depth, such as in harbour approaches or where there are off-lying shoals, the deepest recommended channels have been used.

table The small figures below the distance figures in the table refer to the notes.

vii

Locate terminal positions in the tables nearest to the required departure and destination from the index chartlets.

appropriate page of the table Follow the column down until it meets the line corresponding to the other place named

at the side At this intersection will be found the distance between the two places, with the reference to any notes in small figures immediately below it.

a place common to both tables.

or if more than one table intervenes Link Tables (page 113) may be used.

Examples

Vladivostok-Busan.

Index Chart 5 shows that both places lie within the area of Table 7.

Entering the head of Table 7 (page 37) at Busan (the name first in alphabetical order) follow the column to Vladivostok to obtain the distance of 515 miles.

Vladivostok-Incheon.

Index Charts 4 and 5 show that Tables 4 and 7 can be used, connecting through KOREA STRAIT-W.

Entering the head of Table 7 (page 37) at KOREA STRAIT-W: KOREASTRAIT-W-Vladivostok 544 Entering the head of Table 4 (page 28) at Incheon: Incheon-KOREA STRAIT-W 368

Vladivostok-KOREA STRAIT-E 7 (page 37) 565

NANSEI SHOTC-S-SAN BERNADINO STRAIT 12 (page 91) 781 or 1320 from Link Table J (page 126) SAN BERNADINO STRAIT- Tarakan 3 (page 23) 713

Giving Vladivostok- Tarakan 2598

An alternative route, passing W of Luzon, can be worked as follows:

of a given place It varies with latitude and the Figure of the Earth in use, and is shortest at the equator (1842'9m) and longest at the poles (1861·7m).

For the International Spheroid the length of a sea mile in latitude l is given by the formula:

Sea Mile in latitude l=1852'27561-9'37069xcos 2l+0'01975xcos 4l-O·00004xcos 6l metres

But for practical purposes, the first two terms alone are adequate.

The International Nautical Mile is definer! as a distance of 1852m (6076'1 feet) Therefore the length of an arc of a 'd' d' I h d h ddl I d l (1852,27561-9,37069 xcos 2l) xd IN' I M'I men lan, minutes In engt an Wit nll e atltu e = 1852 nt autlca Ies

= (1-000 1488-0-0050598 xcos2L) xd Int Nautical Miles This correction reaches its greatest value of about 0·5% at the equator and at the poles When applied to the distance between two places in different latitudes the value of the mean latitude may be used for l without appreciable error.

= 716-5 Int Nautical Miles

For most purposes in practical navigation, this adjustment for the International Nautical Mile can be disregarded, but

if necessary it can be readily applied to the formulae for the sphere used in the following sections.

(a) A rhumb line, or loxodrome, is a line on the earth's surface which cuts all meridians at a constant angle It therefore plots on a Mercator chart as a straight line.

Rhumb line distances taken from a Mercator chart are only acceptable if measured on the latitude or distance scale

of the chart within the band of latitude covering the distance in question, and when the difference of latitude is not great With small-scale charts and a large difference of latitude, considerable errors may occur unless great care is taken in using the latitude scale, particularly in high latitudes.

The course and distance between two places may be calculated approximately by plane sailing formulae, or exactly

by meridional parts or middle latitude sailing formulae.

(iii) When angles are entered to obtain a trigonometrical function, most instruments will show the correct +ve or -ve sign If the -ve sign is not shown it should be entered, if necessary, as indicated in the table below.

When entering a trigonometrical function to obtain an angle, ambiguity may arise over the correct quadrant in which the resulting angle should lie First the correct quadrant must be determined by inspection, then the correct angle must be obtained by addition or subtraction, if necessary, from 180° or 360°, as indicated by the arrows in the following table.

The most convenient formula is the Haversine formula:

hav p=hav (f "'-'t) +sin f x sin tx hav L P

which is adapted for great circle work as:

hav FT=hav [(900-Lat F) "'-'(900±Lat T)]+sin (900-Lat F)xsin (900 ±Lat T)xhav d.long (FT)

Example

F is a position off Cadiz in 360 N, 70Wand T is off Monte Video in 3505, 560W.

To find the great circle distance between them.

By tables

The Haversine formula gives:

d.long = 490 log hav 9·23545

From formula (3)

log d.long AB 2·64640 log cas Lat L 9,769 22 Giving Dep AB = 260-4 log 2-415 62

Summing the distances: FA 2690·9

TB 2381 ·6

AB 260·4 Total distance by composite track = 5332-9 miles (minutes of arc on spherical earth)

sin (-54~0) Giving FA = 44~848 06 or FA = 2690-9'

From formula (2)

sin FA

sin L FPA =

cas (-35~0) Giving d.long FA = 59~420 69

Long F 20~000 00

Hence Long A = 79~420 69 or 79025.2' E

From formula (1)

sin (-38~5) cas TB =

sin (-54~0) Giving TB = 39~693 64 or TB=2381-6'

Route

SOUTH CHINA SEA

TABLE 1

SOUTH CHINA SEA-TABLE 1

1

SOUTH CHINA SEA-TABLE 1

Routes A Dangerous Ground (Index Chart 2) lies in the S part of South China Sea It is considered as being bounded on the N

and W sides by lines joining the following positions:

3 Distances are to La-sa-wei From La-sa-wei to Guangzhou Harbour: 84 From places E of Hong Kong, except PALAWAN

PASSAGE-N, the shortest route to Guangzhou Harbour is via Hong Kong, see Note 129

4 To Haiphong harbour: 192

5 See paragraph preceding these notes

6 To Pending: 17 To Kuching: 25

7 To Ho Chi Minh City: 48

8 To Sibu by Batang Rajang main channel: 61

9 Through Palawan Passage

10 Through Palawan Passage If E of Macclesfield Bank and W of Dangerous Ground, add 30

11 Through Palawan Passage If E of Macclesfield Bank and W of Dangerous Ground, add 53

12 Through Palawan Passage If W of Dangerous Ground, add 65

13 Through Palawan Passage If W of Dangerous Ground, add 91

14 Either through Palawan Passage, or W of Dangerous Ground and E of Pulau Bunguran Besar

15 Through Palawan Passage If W of Dangerous Ground and E of Pulau Bunguran Besar, add 1

16 Through Palawan Passage If W of Dangerous Ground and E of Pulau Bunguran Besar, add 22

17 Through Palawan Passage If W of Dangerous Ground, between Pulau Bunguran Besar and Subi Group, and E of Twilight

19 Through Palawan Passage If Waf Dangerous Ground, between Pulau Bunguran Besar and Subi Group, and E of TwilightReef, add 28.

20 Through Palawan Passage If W of Dangerous Ground and E of Subi Group, add 2

21 Through Palawan Passage If W of Dangerous Ground and E of Subi Group, add 23

22 Through Palawan Passage If W of Dangerous Ground and E of Subi Group, add 44

23 E of Twilight Reef, between Pulau Bunguran Besar and Subi Group, and Waf Dangerous Ground

24 Waf Pulau Pejantan

25 Waf Pulau Pejantan and Kepulauan Anambas

26 E of Pulau Pejantan and W of Kepulauan Bodas

27 N of Pulau Belitung

28 N of Pulau Bangka

29 S of Pulau Bangka

30 E of Kepulauan Tujuh, and between Dao Phu Qui and Roche Yusun

31 Through Philip Channel, Selat Durian and Selat Berhala If through Selat Riau, and E of Kepulauan Lingga, add 7

32 Through Selat Riau If through Middle Channel (Singapore Strait) add 2

33 Through Selat Riau If through Middle Channel (Singapore Strait!, add 13

34 Through Middle Channel (Singapore Strait)

35 Through Middle Channel (Singapore Strait) and between Dao Phu Qui and Roche Yusun

36 Through Middle Channel (Singapore Strait), between Dao Phu Qui and Roche Yusun, and W of Paracel Islands: if betweenParacel Islands and Macclesfield Bank, add 31

37 S of Pulau Ritan

38 W of Pulau Midai

39 S of Pulau Midai and through Serasan Passage

40 N of Kepulauan Anambas and through Serasan Passage

41 E of Kepulauan Anambas and W of Pulau Mendarik

42 E of Kepulauan Anambas and W of Enslie Reef

43 W of Kepulauan Anambas

44 Between Pulau Bungurun Besar and Pulau Laut

45 N of Pulau Laut

46 W of Kepulauan Natuna Besar

47 W of Kepulauan Natuna Besar and Dangerous Ground

48 E of Subi Group

49 E of Subi Group and W of Dangerous Ground

50 N of Subi Group and S of Kepulauan Bodas

58 ThroughChong Simui.

57 Between Kas Prins and Koh Tang

58 W of Poulo Panjang

59 E of Con Son

60 E of Con Son and Les Deux Freres If W of Con Son and Les Deux Freres, subtract 13

61 E of Con Son and Les Deux Freres If W of Con Son and Les Deux Freres, subtract 27

62 E of Con Son and iles Catwick

63 E of Con Son, and between Dao Phu Qui and Roche Yusun

64 W of Bane Hollandais

65 Between Dao Phu Qui and Roche Yusun

66 E of iles Catwick

67 E of iles Catwick, W of Dangerous Ground, and E of Pulau Bunguran Besar

68 E of iles Catwick and Pulau Bunguran Besar

69 W of Dangerous Ground

70 W of Dangerous Ground, and ~ :>fSubi Group If through Palawan Passage, add 4

71 W of Dangerous Ground, between Pulau Bunguran Besar and Subi Group, and E of Twilight Reef If through Palawan

Passage, add 20

72 W of Dangerous Ground, and E of Pulau Bunguran Besar If through Palawan Passage, add 25

73 W of Dangerous Ground, and E of Pulau Bunguran Besar

74 W of Dangerous Ground and Kepulauan Natuna Besar If through Palawan Passage, add 22

75 W of Dangerous Ground and Kepulauan Natuna Besar If through Palawan Passage, add 42

76 W of Dangerous Ground and Kepulauan Natuna Besar If through Palawan Passage, add 43

77 W of Dangerous Ground and Kepulauan Natuna Besar If through Palawan Passage, add 69

78 N of Dangerous Ground

79 N of Dangerous Ground If through Palawan Passage, add 13

80 N of Dangerous Ground If through Palawan Passage, add 14

81 N of Dangerous Ground If W of Cabra Island and through Palawan Passage, add 36

82 N of Dangerous Ground If through Palawan Passage, add 31

83 N of Dangerous Ground If through Palawan Passage, add 86

84 N of Dangerous Ground, and between Dao Phu Qui and Roche Yusun

85 SW of Triton Island

86 W of Paracel Islands If between Paracel Islands and Macclesfield Bank, add 12

87 W of Paracellslands If between Paracellslands and Macclesfield Bank, add 16

88 W of Paracellslands If between Paracel Islands and Macclesfield Bank, add 19

89 W of Paracel Islands If between Paracel Islands and Macclesfield Bank, add 24

90 W of Paracel Islands If between Paracel Islands and Macclesfield Bank, add 40

91 W of Paracel Islands If between Paracellslands and Macclesfield Bank, add 71

92 W of Paracellslands and Dangerous Ground: if between Paracellslands and Macclesfield Bank, add 12 If through Palawan

Passage, add 41

SOUTH CHINA SEA-TABLE 1

5

93 W of Paracellslands, between Dao Phu Qui and Roche Yusun, and E of Con Son: if between Paracellslands and MacclesfieldBank, add 31.

94 W of Paracel Islands and Banc Hollandais If between Paracel Islands and Macclesfield Bank, add 26

95 W of Paracel Islands, and between Dao Phu Qui and Roche Yusun

96 N of Paracel Islands

97 Between Paracel Islands and Macclesfield Bank

98 Between Paracel Islands and Macclesfield Bank If W of Paracel Islands, add 7

99 Between Paracel Islands and Macclesfield Bank If W of Paracel Islands, add 21

100 Between Paracel Islands and Macclesfield Bank If E of Macclesfield Bank, add 4

101 Between Paracel Islands and Macclesfield Bank, E of Taiwan Banks, and W of P'eng-hu Ch'un-tao

102 Between Paracellslands and Macclesfield Bank, E of Taiwan Banks, and W of P'eng-hu Ch'un-tao If W of Paracel'slands andTaiwan Banks, add 5

103 Between Paracel'slands and Macclesfield Bank, and W of Dangerous Ground If W of Taiwan Banks and through PalawanPassage, add 16

104 Between Paracellslands and Macclesfield Bank, and W of Dangerous Ground If W of Taiwan Banks and through PalawanPassage, add 38

105 Between Paracellslands and Macclesfield Bank, and W of Dangerous Ground If E of Scarborough Reef and through PalawanPassage, add 48

106 Between Paracellslands and Macclesfield Bank, and W of Dangerous Ground If E of Scarborough Reef and through PalawanPassage, add 71

107 Between Paracellslands and Macclesfield Bank, W of Dangerous Ground, and E of Subi Group If W of Taiwan Banks andthrough Palawan Passage, add 107

108 Between Paracel Islands and Macclesfield Bank, and W of Banc Hollandais

109 Between Paracellslands and Macclesfield Bank, between Dao Phu Qui and Roche Yusun, and E of Con Son If W of ParacelIslands, add 16

110 Between Paracellslands and Macclesfield Bank, and through Middle Channel (Singapore Strait)

111 N of Macclesfield Bank

112 N of Macclesfield Bank and Paracel Islands If S of Paracel Islands, add 3

113 E of Macclesfield Bank

114 E of Macclesfield Bank and W of Banc Hollandais: if between Paracel Islands and Macclesfield Bank, add 3

115 E of Macclesfield Bank, W of Dangerous Ground, and E of Pulau Bunguran Besar If through Palawan Passage, add 60

116 E of Macclesfield Bank, W of Dangerous Ground, and E of Subi Group If through Palawan Passage, add 39

117 E of Macclesfield Bank, W of Dangerous Ground, between Pulau Bunguran Besar and Subi Group, and E of Twilight Reef Ifthrough Palawan Passage, add 55

118 E of Macclesfield Bank, W of Kepulauan Anambas, and through Middle Channel (Singapore Strait): if between ParacelIslands and Macclesfield Bank, add 10

124 W ofoHai-nan Tao.

125 Through Hai-nan Strait

126 Through Hai-nan Strait If S of Hai-nan Tao and Triton Island, add 41

127 Through Hai-nan Strait If S of Hai-nan Tao and Triton Island, add 52

128 Through Hai-nan Strait If S of Hai-nan Tao and Triton Island, add 66

129 To Guangzhou Harbour through Kap Shui Mun: 83

130 Through East Lamma Channel

131 Through East Lamma Channel, and W of Paracel Islands If through Tathong Channel and between Paracel Islands and

Macclesfield Bank, add 4

132 Through East Lamma Channel, and W of Paracel Islands If through Tathong Channel and between Paracel Islands and

Macclesfield Bank, add 10

133 Through East Lamma Channel, and W of Paracel Islands If through Tathong Channel and between Paracel Islands and

Macclesfield Bank, add 27

134 Through East Lamma Channel, and W of Paracel Islands If through Tathong Channel and between Paracel Islands and

Macclesfield Bank, add 32

135 Through East Lamma Channel, and W of Paracel Islands If through Tathong Channel and between Paracel Islands and

Macclesfield Bank, add 63

136 Through East Lamma Channel, and W of Paracel Islands and Dangerous Ground If through Tathong Channel, between

Paracellslands and Macclesfield Bank, and W of Dangerous Ground, add 4: if through Palawan Passage, add 18

137 Through East Lamma Channel, and W of Paracel Islands and Banc Hollandais If through Tathong Channel and between

Paracellslands and Macclesfield Bank, add 18

138 Through East Lamma Channel, W of Paracel Islands, and between Dao Phu Qui and Roche Yusun: if through Tathong

Channel, and between Paracel Islands and Macclesfield Bank, add 23

139 W of Wen-wei Chou

140 Through Lema Channel

141 Through Tathong Channel

142 S of Taiwan Banks

143 W of Taiwan Banks

144 W of Taiwan Banks, and through Palawan Passage

145 E of Taiwan Banks If W of Taiwan Banks, add 10

146 E of Taiwan Banks

147 E of Taiwan Banks, and W of P'eng-hu Ch'un-tao

148 Through P'eng-hu Kang-tao

149 Through P'eng-hu Kang-tao and Palawan Passage

150 Through P'eng-hu Kang-tao and Palawan Passage If W of P'eng-hu Ch'un-tao, E'of Taiwan Banks, between Paracel Islands

and Macclesfield Bank, and W of Dangerous Ground, add 16

151 Through P'eng-hu Kang-tao and Palawan Passage If W of P'eng-hu Ch'un-tao, E of Taiwan Banks, between Paracellslands

and Macclesfield Bank, and W of Dangerous Ground, add 39

152 W of P'eng-hu Ch'un-tao, E of Taiwan Banks, between Paracellslands and Macclesfield Bank, W of Dangerous Ground, and E

of Kepulauan Subi Besar If through P'eng-hu Kang-tao and Palawan Passage, add 53

153 W of Sabtang Island

154 W of Calayan Island

SOUTH CHINA SEA-TABLE 1

7

155 S of Fuga Island.

156 S of Camiguin Island, E of Fuga Island, and W of Calayan Island

157 E of Camiguin Island

158 W of Cabra Island

159 Through P'eng-hu Kang-tao and Palawan Passage If W of Taiwan Banks, between Paracellslands and Macclesfield Bank,

and W of Dangerous Ground, add 22

160 Either through P'eng-hu Kang-tao and Palawan Passage, or W of Taiwan Banks, between Paracellslands and Macclesfield

Bank, and W of Dangerous Ground

8

SOUTH CHINA SEA-TABLE 1

9

PALAWAN PASSAGE

TABLE 2

PALAWAN PASSAGE-TABLE 2

13

PALAWAN PASSAGE-TABLE 2

Routes Distances in this Table, except where stated in the notes, are by routes following the recommended track through

Palawan Passage, and by the shortest routes to and from that track to the places concerned

The recommended track is shown on charts For the purposes of this Table it can be regarded as passing through the following

3 Following recommended track through Palawan Passage to 6°35' N, 115°17' E

4 Following recommended track through Palawan Passage to 6°35' N, 115°17' E If following track to 8°22' N, 116°37' E, and

thence E of Mantanani Islands, subtract 40

5 E of Mantanani Islands

6 Following recommended track through Palawan Passage to 6°00' N, 114°50' E, and through East Channel (Labuan): if E of

Mantanani Islands and through Tiga Channel, subtract 14

7 Through East Channel (Labuan) and Tiga Channel

8 Through East Channel (Labuan) and Tiga Channel, and E of Mantanani Islands

9 N of Champion Shoals and through Tiga Channel

10 N of Champion Shoals, through Tiga Channel, and E of Mantanani Islands

11 N of Champion Shoals and S of Barat Banks

12 Following recommended track through Palawan Passage to 6°00' N, 114°50' E, thence W of Samarang Bank and S of Barat

Banks: if E of Mantanani Islands, through Tiga Channel and East Channel (Labuan), subtract 4

13 Following recommended track through Palawan Passage to 5°04' N, 114°00' E, thence N of Champion Shoals and S of Barat

Banks

14 Following recommended track through Palawan Passage to 5°04' N, 114°00' E

15 Direct from S end of recommended track

1,

SULU AND CELEBES SEAS

TABLE 3

SULU AND CELEBES SEAS-TABLE 3

17

SULU AND CELEBES SEAS-TABLE 3

Rout ••. Palawan Passage runs between the Dangerous Ground in the South China Sea (see Table 1) and the W coasts of

Borneo and Palawan: distances through it are given for the recommended track mentioned in the remarks on Table 2 Distances

between places on the W coast of Borneo within the limits of this Table are given in Palawan Passage-Table 2

Apart from distances to, and between, the stations at the Nand S ends of Palawan Passage, all distances in this Table are

confined to routes passing E of Palawan and W of Leyte and Mindanao

Not••

1 W of Halmahera If through Selat Jailolo, add 18

2 NW of Kepulauan Talaud

3 Between Kepulauan Talaud and Pulau-Pulau Nanusa

4 Between Kepulauan Talaud and Pulau-Pulau Nanusa, through Basilan Strait and N of Bancoran Island

5 Between Tanjung Arus and Biaro

6 Between Tanjung Arus and Biaro, and through Sibutu Passage

7 Between Tahulandang and Siau

8 Between Kepulauan Sang hie and Kepulauan Toade

9 N of Kepulauan Kawio

10 Through Sarangani Strait

11 Through Pangutarang Passage, S of Jolo, and through Sarangani Strait

12 Through Sarangani and Basilan Straits, and N of Bancoran Island

13 Through Basilan Strait

14 E of Karang Muaras and Pulau Maratua

15 Through Alice Channel

16 Through Alice and Malawali Channels

17 Through Sibutu Passage

18 Through Sibutu Passage, and between Pearl Bank and Doc Can Island

19 Through Sibutu Passage and Malawali Channel

20 Between Bambannan Island and Kang Tipayan Diki Island, between Joto and Pangasinan Island, and through Pilas Channel

21 Between Bambannan Island and Kang Tipayan Diki Island, between Jolo and Pangasinan Island, and through Pilas Channel

If E of Sulu Archipelago, add 44

22 Between Pearl Bank and Doc Can Island

23 Between Pegasus Reef and Magpie Bank

24 N of Bancoran Islands

25 W of Cagayan Islands

26 Through Malawali Channel

27 Either through Malawali Channel or Balabac Main Channel

28 W of Pulau Balambangan and through Balabac Main Channel

29 Through Malawali Channel and Pangutarang Passage, and S of Jolo

30 Through Malawali Channel and Pangutarang Passage, S of Jolo and between Talaud and Pulau-Pulau Nanusa

18

31 Through Billbic Mlln Chlnnel If through Nllubltl Chlnn,l, Idd , •.

32 Through Balabae Main Channel, and between Pegasus Reef and Magpie Bank If through Malawali Channel, add 9

33 Through Balabae Main Channel, between Pegasus Reef and Magpie Bank, and through Alice Channel: if through Malawali

Channel, add 9

34 Through Balabae Main Channel, between Pegasus Reef and Magpie Bank, and through Sibutu Passage: if through Malawali

Channel, add 9

35 Through Balabae Main Channel, Basilan Strait and Sarangani Strait: if through Nasubata Channel, add 19

36 Through Balabae Main Channel, Basilan Strait and between Kepulauan Talaud and Pulau-Pulau Nanusa If through Nasubata

Channel, add 19

37 E of Balabae Island

38 Through North Balabae Strait

39 Through North Balabae Strait and North Channel, W of Borneo Bank, and between Pegasus Reef and Magpie Bank

40 Through North Balabae Strait, N of Baneoran Island, and through Basilan Strait

41 Through North Channel and W of Borneo Bank

42 Through North Channel, W of Borneo Bank, and between Pegasus Reef and Magpie Bank

43 Through North Channel and E of Wakefield Shoal

44 Through Nasubata Channel and E of Wakefield Shoal

45 Through Cuyo West Pass, N of Quiniluban Group, between Tablas Island and Panay, and N of Sibuyan Island

46 Through Cuyo East Pass, between Tablas Island and Panay, and N of Sibuyan Island If through Guimaras Strait and

Anauayan Channel, between Don Islands and Negros, between Don Islands and Cebu, and through Black Rock Pass, add 24:

if through Tanon Strait add 36: if through Cebu Strait, add 34

47 Through Apo East Pass, between Tablas and Carabao Islands, between Panay and Gigante Islands, and between Don Islands

and Negros

48 Through Apo East Pass and Cuyo West Pass

49 Through Apo East Pass and Cuyo West Pass, and between Pearl Bank and Doc Can Island

50 Through Apo East Pass, Cuyo West Pass and Basilan Strait

51 Through Apo East Pass and Tablas Strait If through Verde Island Passage, add 5

52 Through Apo East Pass and Tablas Strait, and N of Tablas Island

53 Through Apo East Pass, between Tablas Island and Panay, and through Jintotlo Channel

54 Through Apo East Pass, between Tablas Island and Panay, and through Jintotlo Channel, Kawit Strait and Canigao Channel

55 Through Apo East Pass and Cuyo East Pass

56 Through Calavite Passage, Apo East Pass and Cuyo West Pass

57 Through Calavite Passage, Apo East Pass and Cuyo West Pass, and between Pearl Bank and Doc Can Island

58 Through Calavite Passage, Apo East Pass and Cuyo East Pass If through Verde Island Passage, Tablas Strait and Cuyo East

Pass, add 6

59 Through Calavite Passage, Apo East Pass, Cuyo East Pass and Basilan Strait If through Verde Island Passage, Tablas Strait,

Cuyo East Pass and Basilan Strait add 6

60 Through Verde Island Passage

61 Through Verde Island Passage, Tablas Strait and Cuyo East Pass: if through Jintotlo Channel, add 9

62 Through Verde Island Passage, Romblon Pass and Jintotlo Channel If S of Mindoro, between Tablas Island and Panay, and

through Jintotlo Channel, add 2

63 Through Verde Island Passage, Romblon Pass, Jintotlo Channel, Kawit Strait and Canigao Channel If S pf Mindoro, between

Tablas Island and Panay, and through Jintotlo Channel, Kawit Strait and Canigao Channel, add 2

19

64 Through Romblon Pass, Jintotlo Channel, Kawit Strait and Canigao Channel If through Cuyo East Pass, add 4.

65 Through Romblon Pass, Jintotlo Channel, Kawit Strait and Canigao Channel If through Cuyo East Pass, add 104

66 W of Panay and Tablas Island

67 Through Tablas Strait and Cuyo West Pass

68 Through Tablas Strait and Cuyo West Pass: if through Cuyo East Pass, add 4

69 Through Tablas Strait and Cuyo East Pass

70 Through Tablas Strait and Cuyo East Pass: if through Cuyo West Pass, add 7

71 Through Tablas Strait, Cuyo East Pass and Basilan Strait

72 Through Tablas Strait and Cuyo East Pass, E of Cagayan Islands, and between Pearl Bank and Doc Can Island

73 Through Guimaras Strait

74 S of Negros If N of Negros, and through Anauayan Channel and Guimaras Strait, add 3

75 N of Cebu

76 Either N or S of Cebu

77 S of Cebu

78 Through Cebu Strait

79 Through Anauayan Channel, between Don Islands and Negros, N of Cebu, through Kawit Strait and Canigao Channel If S ofNegros, add 30

80 Between Don Islands and Negros, and through Anauayan Channel

81 Between Don Islands and Negros, and between Gigante Islands and Panay: if E of Bantayan and Tinalisayan Malaki Islands,add 10

82 Between Don Islands and Negros, between Gigante Islands and Panay, and through Romblon Pass and Verde IslandPassage: if E of Bantayan and Tinalisayan Malaki Islands, add 10

83 Between Don Islands and Negros, between Gigante Islands and Panay, and through Romblon Pass and Verde IslandPassage: if between Bantayan and Tinalisayan Malaki Islands, add 10: if between Tablas and Carabao Islands, and S ofMindoro, add 1

84 Through Jintotlo Channel

85 Through Jintotlo Channel If through Cuyo East Pass, add 24

86 Through Jintotlo Channel, Kawit Strait and Canigao Channel If W of Panay and Tablas Island, add 37

87 Through Jintotlo Channel, Kawit Strait and Canigao Channel If W of Panay and Tablas Island, add 138

88 Between Burias and Ticao Islands

89 Through Masbate Pass, N of Sibuyan Island, between Tablas Island and Panay, N of Ouiniluban Group, and through CuyoWest Pass If through Dalupiri Pass, between Don Islands and Negros, and through Anauayan Channel and Guimaras Strait,add 21

90 Through Masbate Pass, N of Sibuyan Island, between Tablas Island and Panay, N of Ouiniluban Group, and through CuyoWest Pass, E of Wakefield Shoal, and through North Channel If through Dalupiri Pass, between Don Islands and Negros,through Anauayan Channel and Guimaras Strait, E of Wakefield Shoal, and through North Channel, add 7

91 Through Masbate Pass, N of Sibuyan Island, between Tablas Island and Panay, N of Ouiniluban Group, through Cuyo WestPass, E of Wakefield Shoal and through Nasubata Channel If through Dalupiri Pass, between Don Islands and Negros,through Anauayan Channel and Guimaras Strait, E of Wakefield Shoal, and through Nasubata Channel, add 7

92 Through Black Rock Pass

93 Through Black Rock Pass, between Don Islands and Cebu, between Don Islands and Negros, and through AnauayanChannel

94 Through Black Rock Pass and Cebu Strait: if through Tafton Strait add 2.

95 Through Black Rock Pass and Cebu Strait and between Pearl Bank and Doc Can Island: if through Tarion Strait add 2: ifbetween Don Islands and Cebu between Don Islands and Negros, through Anauayan Channel and Guimaras Strait, andbetween Pearl Bank and Doc Can Island, add 9: if N of Sibuyan Island, between Tablas Island and Panay through Cuyo EastPass E of Cagayan Islands and between Pearl Bank and Doc Can Island, add 10

96 Through Black Rock Pass Cebu Strait and Pilas Channel and E of Jolo: if through Tarion Strait, add 2

97 Through Black Rock Pass Cebu Strait and Basilan Strait: if through Tarion Strait, add 2

98 Through Black Rock Pass Kawit Strait and Canigao Channel: if through Hilutangan Channel, add 24

99 Through Black Rock Pass Kawit Strait and Canigao Channel: if through Hilutangan Channel, add 100

100 Through Dalupiri Pass

101 Through Dalupiri Pass, between Don Islands and Cebu between Don Islands and Negros, and through Anauayan Channel

102 Through Dalupiri Pass between Don Islands and Cebu, between Don Islands and Negros, through Anauayan Channel andGuimaras Strait, and S of Cagayan Islands

103 Through Dalupiri Pass, between Don Islands and Cebu, between Don Islands and Negros, and through Anauayan Channeland Guimaras Strait: if through Tarion Strait, add 9: if through Bohol Strait, add 7

104 Through Dalupiri Pass and Cebu Strait: if through Tarion Strait, add 2

105 Through Dalupiri Pass Cebu and Basilan Straits: if through Tarion Strait, add 2

106 Through Dalupiri Pass Cebu Strait and Pilas Channel, and E of Jolo: if through Tanon Strait, add 2

107 Through Dalupiri Pass and Bohol Strait and between Pearl Bank and Doc Can Island: if through Tanon Strait, add 2 Ifthrough Dalupiri Pass, between Don Islands and Cebu, between Don Islands and Negros, through Anauayan Channel andGuimaras Strait, and between Pearl Bank and Doc Can Island, add 9

108 Through Dalupiri Pass, Kawit Strait and Canigao Channel: if through Hilutangan Channel, add 24

109 Through Dalupiri Pass Kawit Strait and Canigao Channel: if through Hilutangan Channel, add 100

110 Through Canigao Channel If W of Bohol, add 53

111 E of Jolo and through Pilas Channel

112 E of Jolo and through Pilas Channel If E of Basilan Island, add 20

113 Through Pangutarang Passage and S of Jolo

114 S of Negros