File:Map of United States Submarines Forces Southwest Pacific operating area World War 2 circa 1943.jpg

No higher resolution available.

Map_of_United_States_Submarines_Forces_Southwest_Pacific_operating_area_World_War_2_circa_1943.jpg ‎(580 × 501 pixels, file size: 36 KB, MIME type: image/jpeg)

This is a file from the Wikimedia Commons. Information from its description page there is shown below.
Commons is a freely licensed media file repository. You can help.

Summary

Description	English: 'Caption: After the retreat southward from the Philippines, initial Allied counter-offensives concentrated first on defending the approaches to Australia in the Southwest Pacific. U.S. submarines operated from both Fremantle/Perth and Brisbane to attack Japanese supply lines between the Solomons and their bases at Truk, Rabaul, Palau, and the Marianas.
Date	24 January 2014, 15:58:33
Source	Rising to Victory, Part 1 by Edward C. Whitman
Author	Underseas Warfare - The Official Magazine of the U.S. Submarine Force - Vol. 3, No. 3 (Spring 2001}

Licensing

	This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
	This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.