Question: What difference was found between waterboarding and regular reunabout.
About the article "Wakeboarding", section "Boats".

Candidate passages:
All special operations units in all branches of the U.S. military and the CIA's Special Activities Division employ the use of a form of waterboarding as part of survival school (Survival, Evasion, Resistance and Escape) training, to psychologically prepare soldiers for the possibility of being captured by enemy forces.
John Yoo, former Deputy Assistant Attorney General under President Bush has stated that the United States has subjected 20,000 of its troops to waterboarding as part of SERE training prior to deployment to Iraq and Afghanistan.
Jerald Ogrisseg, former head of Psychological Services for the Air Force SERE School has stated in testimony before the U.S. Senate's Committee on Armed Services that there are fundamental differences between SERE training and what occurs in real world settings.
Dr. Ogrisseg further states that his experience is limited to SERE training, but that he did not believe waterboarding to be productive in either setting.
Jane Mayer wrote for The New Yorker:and continues to report:However, according to a declassified Justice Department memo attempting to justify torture which references a still-classified report of the CIA Inspector General on the CIA's use of waterboarding, among other "enhanced" interrogation techniques, the CIA applied waterboarding to detainees "in a different manner" than the technique used in SERE training:The difference was in the manner in which the detainees' breathing was obstructed.
At the SERE school and in the DoJ opinion, the subject's airflow is disrupted by the firm application of a damp cloth over the air passages; the interrogator applies a small amount of water to the cloth in a controlled manner.
By contrast, the Agency interrogator ... applied large volumes of water to a cloth that covered the detainee's mouth and nose.
One of the psychiatrist / interrogators acknowledged that the Agency's use of the technique is different from that used in SERE training because it is 'for real' and is more poignant and convincing.
According to the DOJ memo, the IG Report observed that the CIA's Office of Medical Services (OMS) stated that "the experience of the SERE psychologist / interrogators on the waterboard was probably misrepresented at the time, as the SERE waterboard experience is so different from the subsequent Agency usage as to make it almost irrelevant" and that "onsequently, according to OMS, there was no a priori reason to believe that applying the waterboard with the frequency and intensity with which it was used by the psychologist/interrogators was either efficacious or medically safe."
The Khmer Rouge at the Tuol Sleng prison in Phnom Penh, Cambodia, used waterboarding as a method of torture between 1975 and 1979.
The practice was documented in a painting by former inmate Vann Nath, which is on display in the Tuol Sleng Genocide Museum.
The museum also has on display boards and other actual tools used for waterboarding during the Khmer Rouge regime. 
The 21 June 2004 issue of "Newsweek" stated that the Bybee Memo, an early August 2002 legal memorandum drafted by John Yoo and signed by his boss, Jay S. Bybee, then head of the Office of Legal Counsel, described interrogation tactics against suspected terrorists or terrorist affiliates the George W. Bush administration would consider legal, was "prompted by CIA questions about what to do with a top Qaeda captive, Abu Zubaydah, who had turned uncooperative... and was drafted after White House meetings convened by George W. Bush's chief counsel, Alberto Gonzales, along with Defense Department general counsel William Haynes and David Addington, Vice President Dick Cheney's counsel, who discussed specific interrogation techniques", citing "a source familiar with the discussions".
Amongst the methods they found acceptable was waterboarding.
Jack Goldsmith, head of the Office of Legal Counsel (October 2003-June 2004) in the Department of Justice, later said this group was known as "the war council".
In November 2005, ABC News reported that former CIA agents claimed that the CIA engaged in a modern form of waterboarding, along with five other "enhanced interrogation techniques," against suspected members of al Qaeda.
On 20 July 2007, U.S. President George W. Bush signed an executive order banning torture during interrogation of terror suspects.
While the guidelines for interrogation do not specifically ban waterboarding, the executive order refers to torture as defined by 18 USC 2340, which includes "the threat of imminent death," as well as the U.S. Constitution's ban on cruel and unusual punishment.
Reaction to the order was mixed, with the CIA satisfied that it "clearly defined" the agency's authorities.
Human Rights Watch said that answers about what specific techniques had been banned lay in the classified companion document and that "the people in charge of interpreting document don't have a particularly good track record of reasonable legal analysis".
On 14 September 2007, ABC News reported that sometime in 2006, CIA Director Michael Hayden asked for and received permission from the Bush administration to ban the use of waterboarding in CIA interrogations.
A CIA spokesperson declined to discuss interrogation techniques, which he or she said "have been and continue to be lawful."
ABC reported that waterboarding had been authorized by a 2002 Presidential finding.
On 5 November 2007, "The Wall Street Journal" reported that its "sources confirm... that the CIA has only used this interrogation method against three terrorist detainees and not since 2003."
John Kiriakou, a former CIA officer, is the first official within the U.S. government to openly admit to the use of waterboarding as an interrogation technique, as of 10 December 2007.
On 6 February 2008, the CIA director General Michael Hayden stated that the CIA had used waterboarding on three prisoners during 2002 and 2003, namely Abu Zubayda, Khalid Shaikh Mohammed, and Abd al-Rahim al-Nashiri.
On 23 February 2008, the Justice Department revealed that its internal ethics office was investigating the department's legal approval for waterboarding of al Qaeda suspects by the CIA and was likely to make public an unclassified version of its report.
On 15 October 2008, it was reported that the Bush administration had issued a pair of secret memos to the CIA in June 2003 and June 2004 explicitly endorsing waterboarding and other torture techniques against al-Qaeda suspects.
The memos were granted only after "repeated requests" from the CIA, who at the time were worried that the White House would eventually try to distance themselves from the issue.
Field employees in the agency believed they could easily be blamed for using the techniques without proper written permission or authority.
Until this point, the Bush administration had never been concretely tied to acknowledging the torture practices.
In December 2008, Robert Mueller, the Director of the FBI since 5 July 2001, had said that despite Bush Administration claims that waterboarding has "disrupted a number of attacks, maybe dozens of attacks", he does not believe that evidence obtained by the U.S. government through enhanced interrogation techniques such as waterboarding disrupted one attack.
In an interview in January 2009, Dick Cheney acknowledged the use of waterboarding to interrogate suspects and said that waterboarding had been "used with great discrimination by people who know what they're doing and has produced a lot of valuable information and intelligence.
"On 1 July 2009, the Obama administration announced that it was delaying the scheduled release of declassified portions of a report by the CIA Inspector General in response to a civil lawsuit.
The CIA report reportedly cast doubt on the effectiveness of the torture used by CIA interrogators during the Bush administration.
This was based on several George W. Bush-era Justice Department memos declassified in the Spring of 2009 by the U.S. Justice Department. 
Following five years of defending the U.S. practice of waterboarding prisoners of war, Hitchens was asked by "Vanity Fair" to experience waterboarding for himself at a U.S. Army training facility.
In May 2008, Hitchens voluntarily underwent the procedure.
Hitchens stopped the procedure after 11 seconds and subsequently endorsed the view that it was "torture."
He concluded, "If waterboarding does not constitute torture, then there is no such thing as torture."
On February 6, 2008, the CIA director General Michael Hayden stated that the CIA had used waterboarding on three prisoners during 2002 and 2003, namely Khalid Shaikh Mohammed, Abu Zubayda and Abd al-Rahim al-Nashiri.
The June 21, 2004, issue of "Newsweek" stated that the Bybee memo, a 2002 legal memorandum drafted by former OLC lawyer John Yoo that described what sort of interrogation tactics against suspected terrorists or terrorist affiliates the Bush administration would consider legal, was "...prompted by CIA questions about what to do with a top Qaeda captive, Abu Zubaydah, who had turned uncooperative ... and was drafted after White House meetings convened by George W. Bush's chief counsel, Alberto Gonzales, along with Defense Department general counsel William Haynes and David Addington, Vice President Dick Cheney's counsel, who discussed specific interrogation techniques," citing "a source familiar with the discussions."
Amongst the methods they found acceptable was waterboarding.
In November 2005, ABC News reported that former CIA agents claimed that the CIA engaged in a modern form of waterboarding, along with five other "enhanced interrogation techniques", against suspected members of al Qaeda.UN High Commissioner for Human Rights, Louise Arbour, stated on the subject of waterboarding "I would have no problems with describing this practice as falling under the prohibition of torture," and that violators of the UN Convention Against Torture should be prosecuted under the principle of universal jurisdiction.
Bent Sørensen, Senior Medical Consultant to the International Rehabilitation Council for Torture Victims and former member of the United Nations Committee Against Torture has said:It’s a clear-cut case: Waterboarding can without any reservation be labeled as torture.
It fulfils all of the four central criteria that according to the United Nations Convention Against Torture (UNCAT) defines an act of torture.
First, when water is forced into your lungs in this fashion, in addition to the pain you are likely to experience an immediate and extreme fear of death.
You may even suffer a heart attack from the stress or damage to the lungs and brain from inhalation of water and oxygen deprivation.
In other words there is no doubt that waterboarding causes severe physical and/or mental suffering – one central element in the UNCAT’s definition of torture.
In addition the CIA’s waterboarding clearly fulfills the three additional definition criteria stated in the Convention for a deed to be labeled torture, since it is 1) done intentionally, 2) for a specific purpose and 3) by a representative of a state – in this case the US.
Gen. Michael D. Maples, the director of the Defense Intelligence Agency, concurred by stating, in a hearing before the Senate Armed Services Committee, that he believes waterboarding violates Common Article 3 of the Geneva Conventions.
The CIA director testified that waterboarding has not been used since 2003.
In April 2009, the Obama administration released four memos in which government lawyers from the Bush administration approved tough interrogation methods used against 28 terror suspects.
The rough tactics range from waterboarding (simulated drowning) to keeping suspects naked and denying them solid food.
These memos were accompanied by the Justice Department's release of four Bush-era legal opinions covering (in graphic and extensive detail) the interrogation of 14 high-value terror detainees using harsh techniques beyond waterboarding.
These additional techniques include keeping detainees in a painful standing position for long periods (Used often, once for 180 hours), using a plastic neck collar to slam detainees into walls, keeping the detainee's cell cold for long periods, beating and kicking the detainee, insects placed in a confinement box (the suspect had a fear of insects), sleep-deprivation, prolonged shackling, and threats to a detainee's family.
One of the memos also authorized a method for combining multiple techniques.
Details from the memos also included the number of times that techniques such as waterboarding were used.
A footnote said that one detainee was waterboarded 83 times in one month, while another was waterboarded 183 times in a month.
The Fox News website carried reports from an unnamed US official who claimed that these were the number of pourings, not the number of sessions.
Physicians for Human Rights has accused the Bush administration of conducting illegal human experiments and unethical medical research during interrogations of suspected terrorists.
The group has suggested this activity was a violation of the standards set by the Nuremberg Trials.