Baselines of the Philippines

The baseline of the Philippines in the darkest blue

The baselines of the Philippines (Filipino: mga batayang-guhit ng Pilipinas) are the set of geodesic lines completely encircling the Philippine archipelago from where the maritime entitlements of the country are measured. It was first established in 1961 by an act of the Congress of the Philippines which was further amended in April 2009 to optimize and conform it to the United Nations Convention on the Law of the Sea, to which the Philippines is a signatory. A total of 101 basepoints providing for 100 baselines were identified under Republic Act No. 9522, which identified Amianan Island as the northernmost, Frances Reef as the southernmost, Pusan Point as its easternmost and the Balabac Great Reef as the westernmost points of the main Philippine archipelago.

Background

The Philippines is an archipelago of 7,641 islands customarily enclosed by the lines demarcated by the Treaty of Paris in 1898 and its supplementary Treaty of Washington of 1900, and the Convention Between the United States and Great Britain in 1930, which came to be known in the Philippines as its International Treaty Limits. The government of the Philippines has maintained its position that the waters enclosed by the demarcation lines in the said treaties form part of its territorial waters regardless of its breadth and dimension.

Baselines

The geographic coordinates below are referenced to the World Geodetic System 1984.

Basepoint number	Station name	Location	Province		Latitude (N)	Longitude (E)	Distance to next basepoint
							nmi	km	mi
1	PAB-01	Amianan Island	Batanes		21° 6′ 57.73″	121° 57′ 27.71″	70.03	129.70	80.59
2	PAB-02	Balintang Island	Cagayan		19° 57′ 38.19″	122° 9′ 46.32″	99.17	183.66	114.12
3	PAB-04	Iligan Point	Cagayan		18° 18′ 35.30″	122° 20′ 19.07″	71.83	133.03	82.66
4	PAB-05A	Ditolong Point	Isabela		17° 7′ 16.30″	122° 31′ 28.34″	1.05	1.94	1.21
5	PAB-05B	Ditolong Point	Isabela		17° 6′ 14.79″	122° 31′ 43.84″	0.39	0.72	0.45
6	PAB-05	Ditolong Point	Isabela		17° 5′ 51.31″	122° 31′ 42.66″	3.29	6.09	3.79
7	PAB-06	Spires Island	Isabela		17° 2′ 36.91″	122° 31′ 3.28″	9.74	18.04	11.21
8	PAB-06B	Digollorin Point	Isabela		16° 53′ 18.03″	122° 27′ 56.61″	3.51	6.50	4.04
9	PAB-06C	Digollorin Rock	Isabela		16° 49′ 56.11″	122° 26′ 50.78″	2.40	4.44	2.76
10	PAB-07	Diviuisa Point	Isabela		16° 47′ 38.86″	122° 26′ 4.40″	30.94	57.30	35.61
11	PAB-08	Dijohan Point	Aurora		16° 18′ 44.33″	122° 14′ 16.69″	116.26	215.31	133.79
12	PAB-10A	Tinaga Island	Camarines Norte		14° 29′ 54.43″	122° 57′ 51.15″	80.29	148.70	92.40
13	PAB-11	Horodaba Rock	Catanduanes		14° 6′ 29.91″	124° 16′ 59.21″	0.54	1.00	0.62
14	PAB-12	Matulin Rock	Catanduanes		14° 6′ 10.40″	124° 17′ 26.28″	96.04	177.87	110.52
15	PAB-13	Atalaya Point	Northern Samar		12° 41′ 6.37″	125° 3′ 53.71″	6.79	12.58	7.81
16	PAB-13A	Bacan Island	Northern Samar		12° 36′ 18.41″	125° 8′ 50.19″	5.52	10.22	6.35
17	PAB-14	Finch Rock	Northern Samar		12° 32′ 33.62″	125° 12′ 59.70″	0.80	1.48	0.92
18	PAB-14A	Cube Rock	Northern Samar		12° 31′ 57.45″	125° 13′ 32.37″	4.90	9.07	5.64
19	PAB-14D	NW Manjud Point	Northern Samar		12° 28′ 36.42″	125° 17′ 12.32″	1.30	2.41	1.50
20	PAB-15	SE Manjud Point	Northern Samar		12° 27′ 37.51″	125° 18′ 5.23″	7.69	14.24	8.85
21	PAB-16A	E Sora Cay	Northern Samar		12° 21′ 41.64″	125° 23′ 7.41″	5.68	10.52	6.54
22	PAB-16B	Panablijon	Eastern Samar		12° 17′ 27.17″	125° 27′ 0.12″	5.21	9.65	6.00
23	PAB-16C	Alugon	Eastern Samar		12° 13′ 21.95″	125° 30′ 19.47″	1.94	3.59	2.23
24	PAB-16D	N Bunga Point	Eastern Samar		12° 11′ 48.16″	125° 31′ 30.88″	0.54	1.00	0.62
25	PAB-17A	E Bunga Point	Eastern Samar		12° 11′ 20.67″	125° 31′ 48.29″	5.71	10.57	6.57
26	PAB-18A	SE Tubabao Island	Eastern Samar		12° 6′ 7.00″	125° 34′ 11.94″	83.84	155.27	96.48
27	PAB-19C	Suluan Island	Eastern Samar		10° 45′ 16.70″	125° 58′ 8.78″	56.28	104.23	64.77
28	PAB-19D	N Tuason Point	Surigao del Norte		9° 49′ 59.58″	126° 10′ 6.39″	57.44	106.38	66.10
29	PAB-20A	Arangasa Island	Surigao del Sur		8° 53′ 16.62″	126° 20′ 48.81″	40.69	75.36	46.83
30	PAB-21B	Sanco Point	Surigao del Sur		8° 13′ 11.53″	126° 28′ 53.25″	30.80	57.04	35.44
31	PAB-22	Bagoso Island	Davao Oriental		7° 42′ 45.02″	126° 34′ 29.03″	12.95	23.98	14.90
32	PAB-22C	Languyan	Davao Oriental		7° 29′ 49.47″	126° 35′ 59.24″	0.54	1.00	0.62
33	PAB-23	Languyan	Davao Oriental		7° 29′ 16.93″	126° 35′ 59.50″	0.76	1.41	0.87
34	PAB-23B	Languyan	Davao Oriental		7° 28′ 30.97″	126° 35′ 57.30″	1.02	1.89	1.17
35	PAB-23C	N Baculin Point	Davao Oriental		7° 27′ 29.42″	126° 35′ 51.71″	10.12	18.74	11.65
36	PAB-24	Pusan Point	Davao Oriental		7° 17′ 19.80″	126° 36′ 18.16″	1.14	2.11	1.31
37	PAB-24A	S Pusan Point	Davao Oriental		7° 16′ 14.43″	126° 35′ 57.20″	63.28	117.19	72.82
38	PAB-25B	Cape San Agustin	Davao Oriental		6° 17′ 14.73″	126° 12′ 14.40″	1.28	2.37	1.47
39	PAB-25	Cape San Agustin	Davao Oriental		6° 16′ 8.35″	126° 11′ 35.06″	67.65	125.29	77.85
40	PAB-26	SE Sarangani Island	Davao Occidental		5° 23′ 34.20″	125° 28′ 42.11″	0.43	0.80	0.49
41	PAB-27	Panguil Bato Point	Davao Occidental		5° 23′ 21.80″	125° 28′ 19.59″	3.44	6.37	3.96
42	PAB-28	Tapundo Point	Davao Occidental		5° 21′ 55.66″	125° 25′ 11.21″	3.31	6.13	3.81
43	PAB-29	W Calia Point	Davao Occidental		5° 21′ 58.48″	125° 21′ 52.03″	0.87	1.61	1.00
44	PAB-30	Manamil Island	Davao Occidental		5° 22′ 2.91″	125° 20′ 59.73″	1.79	3.32	2.06
45	PAB-31	Marampog Point	Davao Occidental		5° 23′ 20.18″	125° 19′ 44.29″	78.42	145.23	90.24
46	PAB-32	Pola Point	Sultan Kudarat		6° 9′ 8.44″	124° 15′ 42.81″	122.88	227.57	141.41
47	PAB-33A	Kauluan Island	Basilan		6° 26′ 47.22″	122° 13′ 34.50″	29.44	54.52	33.88
48	PAB-34A	Tongquil Island	Sulu		6° 2′ 33.77″	121° 56′ 36.20″	2.38	4.41	2.74
49	PAB-35	Tongquil Island	Sulu		6° 1′ 8.15″	121° 54′ 41.45″	1.72	3.19	1.98
50	PAB-35A	Tongquil Island	Sulu		6° 0′ 17.88″	121° 53′ 11.17″	85.94	159.16	98.90
51	PAB-38A	Kinapusan Island	Tawi-Tawi		5° 12′ 8.70″	120° 41′ 38.14″	55.24	102.30	63.57
52	PAB-39	Manuk Manka Island	Tawi-Tawi		4° 47′ 39.24″	119° 51′ 58.08″	43.44	80.45	49.99
53	PAB-40	Frances Reef	Tawi-Tawi		4° 24′ 53.84″	119° 14′ 50.71″	0.61	1.13	0.70
54	PAB-40A	Frances Reef	Tawi-Tawi		4° 25′ 3.83″	119° 14′ 15.15″	15.48	28.67	17.81
55	PAB-41A	Bajapa Reef	Tawi-Tawi		4° 36′ 9.01″	119° 3′ 22.75″	6.88	12.74	7.92
56	PAB-42A	Paguan Island	Tawi-Tawi		4° 42′ 52.07″	119° 1′ 44.04″	3.40	6.30	3.91
57	PAB-43	Alice Reef	Tawi-Tawi		4° 45′ 55.25″	119° 3′ 15.19″	2.28	4.22	2.62
58	PAB-44	Alice Reef	Tawi-Tawi		4° 47′ 5.36″	119° 5′ 12.94″	18.60	34.45	21.40
59	PAB-45	Omapoy Rock	Tawi-Tawi		4° 55′ 10.45″	119° 22′ 1.30″	23.37	43.28	26.89
60	PAB-46	Bukut Lapis Point	Tawi-Tawi		5° 2′ 23.73″	119° 44′ 18.14″	44.20	81.86	50.86
61	PAB-47	Pearl Bank	Sulu		5° 46′ 35.15″	119° 39′ 51.77″	75.17	139.21	86.50
62	PAB-48	Baguan Island	Tawi-Tawi		6° 5′ 58.41″	118° 26′ 57.30″	8.54	15.82	9.83
63	PAB-48A	Taganak Island	Tawi-Tawi		6° 4′ 14.08″	118° 18′ 33.33″	13.46	24.93	15.49
64	PAB-49	Great Bakkungaan Island	Tawi-Tawi		6° 11′ 4.65″	118° 6′ 54.15″	3.97	7.35	4.57
65	PAB-50	Lihiman Island	Tawi-Tawi		6° 13′ 39.90″	118° 3′ 52.09″	5.53	10.24	6.36
66	PAB-51	Sibaung Island	Tawi-Tawi		6° 17′ 43.99″	118° 0′ 5.44″	41.60	77.04	47.87
67	PAB-52	Muligi Island	Tawi-Tawi		6° 52′ 14.53″	118° 23′ 40.49″	75.06	139.01	86.38
68	PAB-53	South Mangsee Island	Palawan		7° 30′ 26.05″	117° 18′ 33.75″	26	48.15	29.92
69	PAB-54	Balabac Island	Palawan		7° 48′ 30.69″	116° 59′ 39.18″	6.08	11.26	7.00
70	PAB-54A	Balabac Great Reef	Palawan		7° 51′ 27.17″	116° 54′ 17.19″	1.18	2.19	1.36
71	PAB-54B	Balabac Great Reef	Palawan		7° 52′ 19.86″	116° 53′ 28.73″	2.27	4.20	2.61
72	PAB-55	Balabac Great Reef	Palawan		7° 54′ 36.35″	116° 53′ 16.64″	7.42	13.74	8.54
73	PAB-60	Ada Reef	Palawan		8° 2′ 0.26″	116° 54′ 10.04″	10.85	20.09	12.49
74	PAB-61	Secam Island	Palawan		8° 11′ 18.36″	116° 59′ 51.87″	30.88	57.19	35.54
75	PAB-62	Latud Point	Palawan		8° 37′ 56.37″	117° 15′ 51.23″	7.91	14.65	9.10
76	PAB-63	SW Tatub Point	Palawan		8° 44′ 17.40″	117° 20′ 39.37″	11.89	22.02	13.68
77	PAB-63A	W Sicud Point	Palawan		8° 53′ 32.20″	117° 28′ 15.78″	13.20	24.45	15.19
78	PAB-64	Tarumpitao Point	Palawan		9° 2′ 57.47″	117° 37′ 38.88″	81.12	150.23	93.35
79	PAB-64B	Dry Island	Palawan		9° 59′ 22.54″	118° 36′ 53.61″	82.76	153.27	95.24
80	PAB-65C	Binangcolan Point	Palawan		11° 13′ 19.82″	119° 15′ 17.74″	74.65	138.25	85.91
81	PAB-67	Pinnacle Rock	Palawan		12° 19′ 35.22″	119° 50′ 56.00″	93.88	173.87	108.04
82	PAB-68	Cabra Island	Occidental Mindoro		13° 53′ 21.45″	120° 1′ 5.86″	115.69	214.26	133.13
83	PAB-71	Hermana Mayor Island	Zambales		15° 48′ 43.61″	119° 46′ 56.09″	9.30	17.22	10.70
84	PAB-72	Tambobo Point	Pangasinan		15° 57′ 51.67″	119° 44′ 55.32″	12.06	22.34	13.88
85	PAB-73B	Rena Point	Pangasinan		16° 9′ 57.90″	119° 45′ 15.76″	0.25	0.46	0.29
86	PAB-73	Rena Point	Pangasinan		16° 10′ 12.42″	119° 45′ 11.95	6.43	11.91	7.40
87	PAB-74	Rocky Ledge	Pangasinan		16° 16′ 34.46″	119° 46′ 19.50″	0.65	1.20	0.75
88	PAB-74A	Piedra Point	Pangasinan		16° 17′ 12.70″	119° 46′ 28.52″	1.30	2.41	1.50
89	PAB-75	Piedra Point	Pangasinan		16° 18′ 29.49″	119° 46′ 44.94″	1.04	1.93	1.20
90	PAB-75C	Piedra Point	Pangasinan		16° 19′ 28.20″	119° 47′ 7.69″	0.63	1.17	0.72
91	PAB-75D	Piedra Point	Pangasinan		16° 20′ 4.38″	119° 47′ 20.48″	80.60	149.27	92.75
92	PAB-76	Dile Point	Ilocos Sur		17° 34′ 24.94″	120° 20′ 33.36″	6.86	12.70	7.89
93	PAB-77	Pinget Island	Ilocos Sur		17° 41′ 17.56″	120° 21′ 2.02″	14.15	26.21	16.28
94	PAB-78	Badoc Island	Ilocos Norte		17° 55′ 4.13″	120° 24′ 40.56″	35.40	65.56	40.74
95	PAB-79	Cape Bojeador	Ilocos Norte		18° 29′ 32.42″	120° 33′ 42.41″	1.77	3.28	2.04
96	PAB-79B	Bobon	Ilocos Norte		18° 30′ 52.88″	120° 34′ 55.35″	53.23	98.58	61.26
97	PAB-80	Calagangan Point	Cagayan		19° 10′ 14.78″	121° 12′ 52.64″	98.07	181.63	112.86
98	PAB-82	Itbayat Island	Batanes		20° 43′ 15.74″	121° 46′ 57.80″	25.63	47.47	29.49
99	PAB-83	Amianan Island	Batanes		21° 7′ 17.47″	121° 56′ 43.85″	0.08	0.15	0.09
100	PAB-84	Amianan Island	Batanes		21° 7′ 18.41″	121° 56′ 48.79″	0.25	0.46	0.29
101	PAB-85	Amianan Island	Batanes		21° 7′ 12.04″	121° 57′ 3.65″	0.44	0.81	0.51

See also

• Extreme points of the Philippines

External links

• Republic Act No. 3046, An Act to Define the Baselines of the Territorial Sea of the Philippines
• Republic Act No. 5446, An Act to Amend Section One of Republic Act Numbered Thirty Hundred and Forty-six, Entitled “an Act to Define the Baselines of the Territorial Sea of the Philippines”
• Republic Act No. 9522, An Act to Amend Certain Provisions of Republic Act No. 3046, as Amended by Republic Act No. 5446, to Define the Archipelagic Baselines of the Philippines, and for Other Purposes