U.S. Naval Base Subic Bay
Overview
 
U.S. Naval Base Subic Bay was a major ship-repair, supply, and rest and recreation facility of the United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 located in Zambales
Zambales
Zambales is a province of the Philippines located in the Central Luzon region. Its capital is Iba. Zambales borders Pangasinan to the north, Tarlac and Pampanga to the east, and Bataan to the south. The province lies between the South China Sea and the Zambales Mountains. With a land area of...

, Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

. It was the largest U.S. Navy installation in the Pacific and was the largest overseas military installation of the United States Armed Forces
United States armed forces
The United States Armed Forces are the military forces of the United States. They consist of the Army, Navy, Marine Corps, Air Force, and Coast Guard.The United States has a strong tradition of civilian control of the military...

 after Clark Air Base
Clark Air Base
Clark Air Base is a former United States Air Force base on Luzon Island in the Philippines, located 3 miles west of Angeles City, about 40 miles northwest of Metro Manila. Clark Air Base was an American military facility from 1903 to 1991...

 in Angeles City
Angeles City
The City of Angeles , located within the province of Pampanga in the Philippines, is locally classified as a first-class, highly-urbanized city. Its name is derived from El Pueblo de los Ángeles in honor of its patron saints, Los Santos Ángeles de los Custodios , and the name of its founder, Don...

 was closed in 1991.
Subic Bay
Subic Bay
Subic Bay is a bay forming part of Luzon Sea on the west coast of the island of Luzon in Zambales, Philippines, about 100 kilometers northwest of Manila Bay. Its shores were formerly the site of a major United States Navy facility named U.S...

's famous strategic location, sheltered anchorages, and deep water was first made known when the Spanish
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

 explorer Juan de Salcedo
Juan de Salcedo
Juan de Salcedo was a Spanish conquistador. He was born in Mexico in 1549 and he was the grandson of Miguel López de Legazpi and brother of Felipe de Salcedo. Salcedo was one of the soldiers who accompanied the Spanish colonization of the Philippines in 1565...

 reported its existence to the Spanish authorities upon his return to Manila
Manila
Manila is the capital of the Philippines. It is one of the sixteen cities forming Metro Manila.Manila is located on the eastern shores of Manila Bay and is bordered by Navotas and Caloocan to the north, Quezon City to the northeast, San Juan and Mandaluyong to the east, Makati on the southeast,...

 after Salcedo arrived in Zambales to establish the Spanish crown but it would be a number of years before the Spanish would consider establishing a base there.

Cavite
Cavite
Cavite is a province of the Philippines located on the southern shores of Manila Bay in the CALABARZON region in Luzon, just 30 kilometers south of Manila. Cavite is surrounded by Laguna to the east, Metro Manila to the northeast, and Batangas to the south...

, which had been home to most of the Spanish fleet in the Philippines, suffered from unhealthy living conditions and was vulnerable in time of war and bad weather because of its shallow water and lack of shelter.
 
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