(CNN) — After 61 days and no discernible evidence, officials from Malaysia, China and Australia will seat down Wednesday to tract a subsequent stairs in a hunt for MH370.

Their tasks: Review all a information collected so distant and figure out what collection will be indispensable in a subsequent theatre of a hunt — a deeper, broader inspect of a Indian Ocean.

Two things are certain: This new proviso will be costly and even some-more difficult.

Australia estimates it will cost $60 million, with a relapse of who’s going to compensate for what nonetheless to be determined.

Search for Flight 370 to expand

New proviso launched in hunt for blank plane

Is a MH370 hunt behind during ‘square one’?

Relatives of Chinese passengers who were on Malaysia Airlines Flight 370 listen to partial of a audio communications between Flight 370’s cockpit and atmosphere trade controllers during a assembly with Malaysian officials Wednesday, Apr 30, in Beijing. The moody has been blank given Mar 8.

An unconstrained underwater car is brought behind aboard a Australian vessel Ocean Shield after a hunt goal for a moody Saturday, Apr 19, in a southern Indian Ocean.

A Royal Malaysian Air Force craft takes off from an airbase nearby Perth, Australia, to assistance in a hunt on Thursday, Apr 17.

Operators aboard a Australian vessel Ocean Shield pierce Bluefin-21, a U.S. Navy’s unconstrained underwater vehicle, into position to hunt for a jet on Monday, Apr 14.

A member of a Royal New Zealand Air Force looks out of a window while acid for waste off a seashore of western Australia on Sunday, Apr 13.

British Royal Navy sailors aboard a vessel HMS Echo take partial in a hunt for a jet on Apr 13.

Crew members aboard a Echo watch a smaller vessel that’s partial of a British hunt bid on Apr 13.

The Echo moves by a waters of a southern Indian Ocean.

A map supposing Saturday, Apr 12, sum efforts to find a blank jet.

Chinese navy organisation conduct out on a vessel to a Royal Australian Navy vessel HMAS Success on Wednesday, Apr 9.

A Royal Australian Air Force AP-3C Orion, on a goal to dump sonar buoys to support in a search, flies past a Australian vessel Ocean Shield on Apr 9.

A relations of a blank newcomer cries during a burial in Beijing on Tuesday, Apr 8.

A member of a Royal Australian Air Force walks toward a craft that usually arrived in Perth on Apr 8.

Australian Defense Force divers indicate a H2O for waste Monday, Apr 7, in a southern Indian Ocean.

A towed pinger locator is readied to be deployed Apr 7 off a rug of a Australian vessel Ocean Shield.

Capt. Mark Matthews of a U.S. Navy talks to reporters in Perth about a hunt on Apr 7.

A member of a hunt operation points to a map surveying hunt areas during a news discussion Apr 7 in Perth.

A U.S. Navy aeroplane takes off from Perth to support in a hunt on Apr 7.

A member of a Royal New Zealand Air Force looks during a light in a Indian Ocean during hunt operations on Friday, Apr 4.

Members of a Royal New Zealand Air Force ensure information Apr 4 on house an aircraft during hunt operations.

A relations of a Flight 370 newcomer watches radio in a Beijing hotel as he awaits new information about a blank craft on Thursday, Apr 3.

Another relations of a Flight 370 newcomer waits for updates in Beijing on Wednesday, Apr 2. Many families have criticized a Malaysian government’s doing of information in a plane’s disappearance.

A member of a Japanese seashore ensure points to a moody position information shade while acid for waste from a blank jet on Tuesday, Apr 1.

Kojiro Tanaka, conduct of a Japanese seashore ensure hunt mission, explains a efforts en track to a hunt section Apr 1.

A lady prepares for an eventuality in respect of those aboard Flight 370 on Sunday, Mar 30, in Kuala Lumpur, Malaysia.

An underwater search-surveying car sits on a quay in Perth, prepared to be propitious to a vessel to support in a hunt for a jet.

A lady in Kuala Lumpur writes a note during a rite for a blank passengers on Mar 30.

A teary-eyed lady listens from a behind as other kin of Flight 370 passengers pronounce to reporters Mar 30 in Subang Jaya, Malaysia. Dozens of anguished Chinese kin demanded that Malaysia yield answers to a predestine of those on board.

An intent floating in a southern Indian Ocean is seen from a Royal New Zealand Air Force P-3K2 Orion aircraft acid for a blank jet on Saturday, Mar 29. Ships participating in a hunt retrieved new waste Saturday, yet no objects related to a blank plane, according to Australian authorities.

A Royal New Zealand Air Force member launches a GPS pen buoy over a southern Indian Ocean on Mar 29.

The solitary deputy for a families of Flight 370 passengers leaves a discussion during a Beijing hotel on Friday, Mar 28, after other kin left en masse to criticism a Malaysian government’s response to their questions.

A member of a Royal Australian Air Force is silhouetted opposite a southern Indian Ocean during a hunt for a blank jet on Thursday, Mar 27.

Flight Lt. Jayson Nichols looks during a map aboard a Royal Australian Air Force aircraft during a hunt on Mar 27.

People in Kuala Lumpur light candles during a rite reason for a blank flight’s passengers on Mar 27.

Crew members of a Chinese icebreaking vessel Xuelong indicate a Indian Ocean during a hunt for a blank jet on Wednesday, Mar 26.

People work during a console during a British satellite association Inmarsat on Tuesday, Mar 25, in London.

The mom of a newcomer who was on Malaysia Airlines Flight 370 cries during her home in Medan, Indonesia, on Mar 25.

Australian Defense Minister David Johnston speaks to a media Mar 25 about a hunt for a blank jet.

A family member of a blank newcomer reacts after discussion a latest news Mar 25 in Kuala Lumpur.

Angry kin of those aboard Malaysia Airlines Flight 370 conflict in Beijing on Monday, Mar 24, after discussion that a craft went down over a southern Indian Ocean, according to research of satellite data.

Grieving kin of blank passengers leave a hotel in Beijing on Mar 24.

Malaysian Prime Minister Najib Razak, center, delivers a matter about a moody Mar 24 in Kuala Lumpur. Razak’s proclamation came after a airline sent a content summary to kin observant it “deeply regrets that we have to assume over any reasonable doubt that MH 370 has been mislaid and that nothing of those onboard survived.”

Relatives of a blank passengers reason a candlelight burial in Beijing on Mar 24.

A member of a Royal Australian Air Force looks out an aircraft during a hunt for a blank jet Mar 24.

A lady reads messages for blank passengers during a selling mall in Kuala Lumpur on Mar 24.

Flight Lt. Josh Williams of a Royal Australian Air Force operates a controls of an AP-3C Orion on Sunday, Mar 23, after acid a southern Indian Ocean.

Ground organisation members call to a Japanese Maritime Defense Force unit craft as it leaves a Royal Malaysian Air Force bottom in Subang, Malaysia, on Sunday, Mar 23. The craft was streamer to Australia to join a search-and-rescue operation.

A newcomer views a continue map in a departures depot of Kuala Lumpur International Airport on Saturday, Mar 22.

A Chinese satellite prisoner this image, expelled on Mar 22, of a floating intent in a Indian Ocean, according to China’s State Administration of Science. It is a probable lead in a hunt for a blank plane. Surveillance planes are looking for dual objects speckled by satellite imagery in remote, fraudulent waters some-more than 1,400 miles from a west seashore of Australia.

A member of a Royal Australian Air Force looks down during a Norwegian businessman vessel Hoegh St. Petersburg, that took partial in hunt operations Friday, Mar 21.

The Royal Australian Air Force’s Neville Dawson, left, goes over a hunt area with Brittany Sharpe aboard an AP-3C Orion some 2,500 kilometers (about 1,500 miles) southwest of Perth, Australia, over a Indian Ocean on Mar 21.

Satellite imagery supposing by a Australian Maritime Safety Authority on Thursday, Mar 20, shows waste in a southern Indian Ocean that could be from Flight 370. The proclamation by Australian officials that they had speckled something lifted hopes of a breakthrough in a frustrating search.

A closer demeanour during a satellite shot of probable waste from Malaysia Airlines Flight 370.

Another satellite shot supposing by a Australian Maritime Safety Authority shows probable waste from a flight.

A closer demeanour during a satellite shot of probable debris.

The Australian Maritime Safety Authority’s John Young speaks to a media in Canberra, Australia, on Mar 20 about satellite imagery.

A distraught relations of a blank newcomer breaks down while articulate to reporters during Kuala Lumpur International Airport on Wednesday, Mar 19.

A relations of blank passengers waits for a news lecture by officials in Beijing on Tuesday, Mar 18.

A relations of a blank newcomer tells reporters in Beijing about a craving strike to criticism authorities’ doing of information about a blank jet.

A member of Indonesia’s National Search and Rescue Agency joins in a hunt for a blank craft in a Andaman
Sea area around a northern tip of Indonesia’s Sumatra on Monday, Mar 17.

Relatives of blank passengers watch a news module about a blank craft as they wait information during a hotel ballroom in Beijing on Mar 17.

Malaysian Transportation Minister Hishamuddin Hussein, center, shows maps of a hunt area during a hotel subsequent to a Kuala Lumpur International Airport on Mar 17.

U.S. Navy organisation members support in search-and-rescue operations Sunday, Mar 16, in a Indian Ocean.

Indonesian organisation watch over high seas during a hunt operation in a Andaman Sea on Saturday, Mar 15.

A froth plane, that has personalized messages for a blank flight’s passengers, is seen during a observation gallery Mar 15 during Kuala Lumpur International Airport.

A member of a Malaysian navy creates a call as his vessel approaches a Chinese seashore ensure vessel in a South China Sea on Mar 15.

A Indonesian vessel heads to a Andaman Sea during a hunt operation nearby a tip of Sumatra, Indonesia, on Mar 15.

Elementary propagandize students urge for a blank passengers during category in Medan, Indonesia, on Mar 15.

Col. Vu Duc Long of a Vietnam atmosphere force fields reporters’ questions during an atmosphere bottom in Ho Chi Minh City, Vietnam, after a hunt operation on Friday, Mar 14.

Members of a Chinese navy continue hunt operations on Thursday, Mar 13. The hunt area for Flight 370 has grown wider. After starting in a sea between Malaysia and Vietnam, a plane’s final reliable location, efforts are expanding west into a Indian Ocean.

A Vietnamese troops central looks out an aircraft window during hunt operations Mar 13.

Malaysian atmosphere force members demeanour for waste on Mar 13 nearby Kuala Lumpur.

A relations of a blank newcomer watches TV during a Beijing hotel as she waits for a latest news Mar 13.

A member of a Indonesian National Search and Rescue Agency scans a setting in a Strait of Malacca on Wednesday, Mar 12.

Relatives of blank passengers wait for a latest news during a hotel in Beijing on Mar 12.

Journalists lift their hands to ask questions during a news discussion in Sepang on Mar 12.

Indonesian atmosphere force officers in Medan, Indonesia, inspect a map of a Strait of Malacca on Mar 12.

A member of a Vietnamese atmosphere force checks a map while acid for a blank craft on Tuesday, Mar 11.

Iranians Pouri Nourmohammadi, second left, and Delavar Seyed Mohammad Reza, distant right, were identified by Interpol as a dual group who used stolen passports to house a flight. But there’s no justification to advise possibly was connected to any militant organizations, according to Malaysian investigators. Malaysian military trust Nourmohammadi was perplexing to emigrate to Germany regulating a stolen Austrian passport.

An Indonesian navy organisation member scans an area of a South China Sea adjacent Indonesia, Malaysia and Thailand on Monday, Mar 10.

Vietnam atmosphere force Col. Le Huu Hanh is reflected on a navigation control row of a craft that is partial of a hunt operation over a South China Sea on Mar 10.

Relatives of a blank flight’s passengers wait in a Beijing hotel room on Mar 10.

A U.S. Navy Seahawk helicopter lands aboard a USS Pinckney to change crews before returning to hunt for a blank craft Sunday, Mar 9, in a Gulf of Thailand.

Members of a Fo Guang Shan rescue group offer a special request Mar 9 during Kuala Lumpur International Airport.

A welfare design supposing by a Malaysian Maritime Enforcement Agency shows organisation checking a radar shade during search-and-rescue operations Mar 9.

Italian traveller Luigi Maraldi, who reported his pass stolen in August, shows his stream pass during a news discussion during a military hire in Phuket island, Thailand, on Mar 9. Two passengers on a blank Malaysia Airlines moody were reportedly roving on stolen passports belonging to Maraldi and an Austrian citizen whose papers were stolen dual years ago.

Hugh Dunleavy, blurb executive of Malaysia Airlines, speaks to reporters Mar 9 during a Beijing hotel where kin and friends of a blank flight’s passengers are staying.

Vietnamese atmosphere force organisation mount in front of a craft during Tan Son Nhat airfield in Ho Chi Minh City on Mar 9 before streamer out to a area between Vietnam and Malaysia where a airliner vanished.

Buddhist monks during Kuala Lumpur International Airport offer a special request for a blank passengers on Mar 9.

The Chinese navy warship Jinggangshan prepares to leave Zhanjiang Port early on Mar 9 to support in search-and-rescue operations for a blank Malaysia Airlines flight. The Jinggangshan, an amphibious alighting ship, is installed with lifesaving equipment, underwater display inclination and reserve of oil, H2O and food.

Members of a Chinese puncture response group house a rescue vessel during a pier of Sanya in China’s Hainan range on Mar 9. The vessel is carrying 12 divers and will event with another rescue vessel on a approach to a area where hit was mislaid with Malaysia Airlines Flight 370.

The rescue vessel sets out from Sanya in a South China Sea.

A family member of blank passengers is mobbed by reporters during Kuala Lumpur International Airport on Saturday, Mar 8.

A Vietnamese atmosphere force craft found traces of oil that authorities had suspected to be from a blank Malaysia Airlines plane, a Vietnamese supervision online journal reported Mar 8. However, a representation from a sharp showed it was fort oil, typically used to energy vast load ships, Malaysia’s state news agency, Bernama, reported on Mar 10.

Malaysian Prime Minister Najib Razak, center, arrives to accommodate family members of blank passengers during a accepting core during Kuala Lumpur International Airport on Mar 8.

Malaysia Airlines central Joshua Law Kok Hwa, center, speaks to reporters in Beijing on Mar 8.

A relations of dual blank passengers reacts during their home in Kuala Lumpur on Mar 8.

Wang Yue, executive of selling of Malaysia Airlines in China, reads a association matter during a news discussion during a Metro Park Lido Hotel in Beijing on Mar 8.

Chinese military during a Beijing airfield mount beside a attainment house display behind Flight 370 in red on Mar 8.

A lady asks a staff member during a Beijing airfield for some-more information on a blank flight.

A Malaysian male who says he has kin on house a blank craft talks to reporters during a Beijing airfield on Mar 8.

Passengers travel past a Malaysia Airlines pointer on Mar 8 during Kuala Lumpur International Airport.

Malaysia Airlines Group CEO Ahmad Juahari Yahya, front, speaks during a news discussion on Mar 8 during a hotel in Sepang. “We deeply bewail that we have mislaid all contacts” with a jet, he said.

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Photos: The hunt for Malaysia Airlines Flight 370

But maybe a biggest plea now will be scouring unchartered territory. A pivotal component of a new proviso will be a minute mapping of a sea floor.

“We know that a H2O is really deep,” Australian Deputy Prime Minister Warren Truss pronounced this week. “And for a subsequent theatre involving sonar and other unconstrained vehicles, potentially during really good depths, we need to have an bargain of a sea building to be means to commence that kind of hunt effectively and safely.”

The subsequent proviso will concentration on 60,000 block kilometers of a sea floor, a routine that could take 6 to 8 months.

Truss pronounced he’s not certain how low a sea is in a stretched hunt area since “it’s never been mapped.”

Search enters new, ‘more difficult’ $60 million phase

The tools

Searchers devise to use some-more rarely specialized technology, including towed side-scan sonar and some-more unconstrained underwater vehicles. Truss pronounced many of a new apparatus will expected have to come from a private sector.

“You can count on one palm a series of inclination that can do this work, when we speak about towed sonar devices,” pronounced Angus Houston, arch coordinator of a corner hunt effort, pronounced Monday.

Truss pronounced he’s assured that a new inclination will be in a H2O within a month or two. In a meantime, he said, a Bluefin-21 worker will continue underwater missions.

The Bluefin-21 has already scanned 400 block kilometers of a Indian Ocean floor, yet with no luck. The United States has certified a use of a worker for another month. The cost? About $40,000 a day.

While a Bluefin-21 provides larger fortitude than deep-towed sonar devices, a worker can usually go about 4.5 kilometers deep.

Skepticism abound