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DEPARTMENT OF COMMERCE
U.S. COAST AND GEODETIC SURVEY
11

E. LESTER JONES, DIRECTOR

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DEPARTMENT OF COMMERCE,
UNITED STATES COAST AND GEODETIC SURVEY,

Washington, November 1, 1927. This publication covers the coasts of Luzon, Mindoro, and the Visayan Islands with the adjacent islands and waters. It is based mainly upon the work of the United States Coast and Geodetic Survey. The waters north and northeast of Luzon have not yet been surveyed, and the notes relating to those waters have been compiled from a variety of sources, principally from the Spanish Derrotero and from reconnaissances by United States and Philippine Islands Government vessels.

This volume covers the area formerly included in Sections I to IV, Philippine Islands Sailing Directions, compiled by John Dow, nautical expert in the Manila field station of the United States Coast and Geodetic Survey, and it consists of a rearrangement and revision of the fourth edition of that publication, together with a large amount of new information gathered by the various field officers of the survey. The present second edition has been prepared in the office of the United States Coast and Geodetic Survey at Manila by R. J. Christman, chief of chart division, under the supervision of R. B. Derickson, hydrographic and geodetic engineer, United States Coast and Geodetic Survey, director of coast surveys.

Great courtesy has been shown by the United States Army, the Nayy, the several Philippine government bureaus, local authorities, and navigators in the islands in furnishing information for use in this publication. The aids to navigation are corrected to June 30, 1927.

Navigators are requested to notify the director of coast surveys, Manila, P. I, of any errors or omissions they may find in this publication or of accitional matter which they think should be inserted for the information of mariners.

E. LESTER JONES, Director.

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CONTENTS

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14

• Page

Page

Note...

IV Visayan Islands, etc. Continued.

Index map---

1 West coast of Masbate..

180

South coast of Masbate.... 182

GENERAL INFORMATION

Islands south of Masbate. 183

Pilots and pilotage.

Northeast coast of Masbate. 184

Quarantine

Ticao Island

186

Weather...

East coast of Masbate.

189

Storm warnings-

Islands between Masbate and

Radio service..

Samar...

190

Variation of the compass.

8 West coast of Panay

192

Tides and currents..

8 South coast of Panay

196

Coastwise navigation --

11 North coast of Panay

202

Table of distances...

12 East coast of Panay-

207

North coast of Negros..

215

DESCRIPTIONS AND SAILING

West coast of Negros..

220

DIRECTIONS

South coast of Negros.

222

Islands and channels north of

East coast of Negros..

227

Luzon.

13 Islands off the north end of Cebu. 235

Batan Islands.

West coast of Cebu.

236

The Babuyan Islands.

17 East coast of Cebu...

244

Luzon...

21 North coast of Bohol..

256

North coast of Luzon..

21 Danajon Bank..

258

West coast of Luzon.

24 West coast of Bohol..

262

Cape Bojeador to Lingayen

South coast of Bohol..

270

Gulf..

24

East coast of Bohol.

273

Lingayen Gulf.

33 Channel between Danajon Bank

Cape Bolinao to Manila Bay - 37 and Leyte.

275

Manila Bay..

48 Siquijor Island

276

Pasig River and Laguna de

North coast of Samar.

278

Bay-

54 East coast of Samar

285

Manila Bay to Cape Santiago. 55 South coast of Samar.

302

Southwest coast of Luzon... 57 West coast of Samar

306

Balayan Bay-

57 North coast of Leyte.-.

315

Batangas Bay-

Biliran and adjacent islands.- 316

Matoco Point to Bantigui

West coast of Leyte..

318

Point..

60 South coast of Leyte.

324

Tayabas Bay.

61 East coast of Leyte-

326

Tayabas Bay to Ragay Gulf - 65

Marinduque Island.

69

APPENDIX

Ragay Gulf

75

Burias Island

80 Coast pilots and field stations of the

South coast of Luzon..

82

Coast and Geodetic Survey - 333

East coast of Luzon..

89 Coast pilots...

333

Cape Engaño to Lamon Bay- 89 Field stations-

333

Polillo Island....

93 Navigational aids and the use of

Lamon Bay-

98 charts.

333

Lamon Bay to Lagonoy Gulf. 104 Remarks on the use of charts... 335

Catanduanes Island...

122 Use of oil for modifying the effect

East coast of Catanduanes.. 127 of breaking waves.

340

Lagonoy Gulf

134 Use of sounding tubes.-

341

Albay Gulf

138 Practical rules for typhoons.-- 342

Mindoro and Lubang Islands. 143 Instructions to mariners in case of

Lubang Islands

143

shipwreck..

344

North coast of Mindoro

146 Rules of the road, international.-- 348

East Coast of Mindoro.

153 Harbor regulations.-

355

Semirara Islands..--

159 Pilotage.

361

Mindoro Strait...

161 Special regulations for Manila

West coast of Mindoro.

162 Harbor and the Pasig River.--- 31,5

Visayan Islands and waters - 169 Custom collection districts. 371

Sibuyan Sea

169 | Philippine

Government radio

Tablas Island

173 stations...

372

Romblon Island.

176 Meteorological table..

373

Sibuyan Island

177 Index.

379

661896

NOTE

The courses and bearings given in degrees are true, reading clockwise from 0° at north to 359°, and are followed by the equivalent magnetic value in points in parentheses. General directions, such as northeastward, west-southwestward, etc., and all courses given in points, are magnetic.

Distances are in nautical miles and may be converted approximately to statute miles by adding 15 per cent to the distances given.

Currents are expressed in knots, which are nautical miles per hour.

All depths, except where otherwise stated, are at mean lower low water. In accordance with the desire of the International Hydrographic Conference, the equivalent expressed in meters follows in parentheses.

Heights are given in feet, followed by the metric equivalent in parentheses.

Changes and other corrections affecting Coast Pilot volumes are included in the Notice to Mariners published weekly by the United States Department of Commerce. Changes and corrections affecting Philippine charts and coast pilots are published quarterly in Manila Notice to Mariners. About one year after a Coast Pilot is published, and at approximately yearly intervals thereafter until a new edition is brought out, a supplement, giving the more important corrections and additions to its text since the date of its publication, is issued. The date of the latest supplement to each Coast Pilot, for which a supplement has been issued, is shown in the list of Coast Pilots published each week in the Notice to Mariners. Any supplement may be obtained, free of charge, upon application to the Coast and Geodetic Survey, Washington, D. C., or any of its field stations. Each supplement is complete in itself and cancels all previous supplements.

Do not use this Coast Pilot except with reference to the latesti supplement that may have been published and Notices to Mariners issued after the date of the supplement.

IV

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