With vast area of Indian Ocean finally mapped, ships prepare to resume search for Flight 370

After a four-month hiatus, the hunt for Malaysia Airlines Flight 370 is about to resume in a desolate stretch of the Indian Ocean, with searchers lowering new equipment deep beneath the waves in a bid to finally solve one of the world's most perplexing aviation mysteries.

The GO Phoenix, the first of three ships that will spend up to a year hunting for the wreckage far off Australia's west coast, is expected to arrive in the search zone Sunday, depending on the weather.

Crews will use sonar, video cameras and jet fuel sensors to scour the water for any trace of the Boeing 777, which disappeared March 8.

The search has been on hold for months so crews could map the seabed about 1,800 kilometers (1,100 miles) west of Australia.