The Hawaii-Southern California Training and Testing EIS/OEIS Study Area plays a vital role in accomplishing the Navy mission. It has unique attributes, including location, proximity, environment, infrastructure, and size, that make it an ideal venue for training military personnel and testing equipment and systems.

Southern California is home to the largest concentration of U.S. naval forces in the world, and the Southern California Range Complex is the Navy’s most capable and heavily used range complex in the eastern Pacific region.

Naval forces based in Hawaii and those transiting across the Pacific Ocean use and rely on the Hawaii Range Complex because of its capabilities and strategic location in the mid-Pacific region. Within the Hawaii Range Complex is a one of a kind strategic national asset, the Pacific Missile Range Facility on Kauai, a designated Major Range and Test Facility Base. It is the world’s largest instrumented multi-environment test and training range, capable of supporting ocean surface, subsurface, air, and space operations simultaneously.

The transit areas adjoining these two critical range complexes provide ample area for ships and aircraft to conduct valuable en route training and testing.

HSTT EIS/OEIS Study Area Map
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The Hawaii-Southern California Training and Testing EIS/OEIS Study Area includes:

• At-sea areas off the coasts of Hawaii and Southern California
• Areas on the high seas between the Navy’s Hawaii and Southern California range complexes where training and testing may occur during vessel transit
• A Temporary Operating Area north and west of the Hawaii Operating Area
• Select Navy pierside and harbor locations