 The nautical highway was opened to the public on April 12, 2003 as the Strong Republic Nautical Highway (SRNH).Its route covers the provinces and cities of Tagaytay and Batangas City of Calabarzon, Marinduque, Romblon and Oriental Mindoro in Luzon; Aklan, Antique, Capiz, Iloilo, Guimaras, Negros Occidental and Negros Oriental, Siquijor, Cebu and Bohol in Visayas; and Misamis Occidental and Misamis Oriental, Lanao del Norte, and Dapitan of Zamboanga del Norte in Mindanao.This system reduced the previous usual travel time by 17 hours to the different key cities, enhancing the accessibility of the prime tourist destinations, and minimizing the handling expenses of goods, all over the country.