The location of Sangley Point Naval Base is the most probable reason why northern Cavite has hi-res imagery in Google Local. The same can be said for the former U.S. Clark Air Base. But it’s intriguing to note that Subic Bay isn’t in hi-res, and we don’t know why parts of Bulacan have hi-res imagery.
Sangley Point Naval Base is currently where most of the Philippine Navy’s fleet is headquartered. The base occupies the northern portion of the Cavite City peninsula. You can see some of the ships along Canacao Bay between the “claws” of the city. Quite visible, even from afar, is the base’s 2-kilometer-long airstrip (part of the Danilo Atienza Air Base), which is the home of the Philippine Air Force’s 15th Strike Wing.