A潜艇携带五个人已经走了错过当时他正在加拿大纽芬兰海岸游览泰坦尼克号的水下残骸。
这艘深海船由OceanGate Expeditions运营，在周日早上在96小时的氧气供应下潜水后，大约1小时45分钟失去联系。美国海岸警卫队与加拿大海岸警卫队和加拿大武装部队协调，立即启动了搜救行动21英尺长的密封飞船泰坦号。
失踪潜艇上的5个人是谁?
著名的探险家和父子二人组也在其中船上的五个人美国广播公司新闻获悉，一艘潜水艇在游览泰坦尼克号残骸时于周日在大西洋失踪。
美国广播公司新闻已经证实，船上的人是:斯托克顿拉什，海洋门的首席执行官;英国商人、飞行员和太空游客哈米什·哈丁;法国潜水员、泰坦尼克号专家保罗-亨利·纳吉奥莱(Paul-Henri Nargeolet);巴基斯坦商人Shahzada Dawood和他的儿子Suleman Dawood。
专家在2018年的信中表达了对泰坦安全的担忧
一个专门研究潜水器的委员会成员在2018年写给OceanGate首席执行官斯托克顿·拉什(Stockton Rush)的一封信中表达了对“泰坦”发展的“一致关切”，后者是失踪船只上的乘客之一。
这封信是由《纽约时报》获得后来被美国广播公司证实。
这封信警告说，泰坦的开发可能会出现“灾难性”问题，可能会“给业内每个人带来严重后果”。这封信接着说，OceanGate的安全声明是“误导公众”，并坚持由第三方机构对Titan进行审查。
根据委员会主席William Kohnen的说法，这封来自海洋技术协会的信从未被批准发送给OceanGate，但很快被泄露给了其首席执行官。
“这封信确实代表了2018年许多业内人士的共识，即他们不考虑遵循行业使用的标准安全协议和设计，”Kohnen告诉美国广播公司新闻。
尽管他希望当时没有泄露出去，现在也没有泄露给《纽约时报》,Kohnen说他支持这封信和它的警告。
“该公司曾表示，他们的创新状态超出了我们今天的监管标准所允许的范围，他们将在没有认证的情况下继续进行，”Kohnen说。"这让许多业内人士感到担忧。"
Kohnen承认，OceanGate确实“注意到”了2018年信中的一些评论。
搜索队已经覆盖了7600平方英里
海岸警卫队官员说，搜救队现在已经覆盖了7600平方英里的面积，比康涅狄格州还要大，因为他们在海洋中搜寻失踪的潜水器。
据美国海岸警卫队第一区的一名公共信息事务中尉称，预计周二晚上会有一个描绘扩大搜索区域的网格。
美国宇航局介入失踪潜水器
美国宇航局周二在泰坦上发布了一份声明，称仍然“希望机组人员能够安然无恙。”
“NASA的马歇尔太空飞行中心与OceanGate签订了太空法案协议，并就潜水器的材料和制造工艺进行了咨询。美国宇航局没有通过其劳动力或设施进行测试和制造，”该机构说。
美国海军派出打捞专家，设备帮助潜水器
美国海军表示，将向搜索现场派遣专家和设备，“旨在为回收大型、笨重和沉重的海底物体提供可靠的深海提升能力。”
海军称，该设备可重达60，000磅，专家将于周二晚上抵达加拿大。
国家安全委员会发言人约翰·柯比(John Kirby)周二早些时候表示，海军“随时准备”帮助搜索失踪的潜水器，因为海军“拥有海岸警卫队不一定拥有的一些深水能力”
柯比说，乔·拜登总统正在“密切关注事态发展”，并补充说，拜登和白宫将他们的想法“提供给船上的船员，以及毫无疑问担心的岸上家庭成员。”
Missing Titanic submersible live updates: More details emerge amid desperate search
Asubmersiblecarryingfive peoplehas gonemissingwhile on a tour of the underwater wreckage of the Titanic off the coast of Newfoundland, Canada.
The deep-sea vessel, operated by OceanGate Expeditions, lost contact about an hour and 45 minutes after submerging on Sunday morning with a 96-hour oxygen supply. The United States Coast Guard, in coordination with the Canadian Coast Guard and the Canadian Armed Forces, immediately launcheda search and rescue operationfor the 21-foot sealed craft, named Titan.
Who are the 5 people aboard the missing sub?
Renowned explorers and a father-son duo were amongthe five people aboarda submersible that disappeared in the Atlantic Ocean on Sunday while touring the Titanic wreckage, ABC News has learned.
ABC News has confirmed that those aboard are: Stockton Rush, the CEO of OceanGate; Hamish Harding, a British businessman, pilot and space tourist; Paul-Henri Nargeolet, a French diver and Titanic expert; Shahzada Dawood, a Pakistani businessman, and his son Suleman Dawood.
Experts expressed Titan safety concerns in 2018 letter
Members of a committee specializing in submersibles expressed "unanimous concern regarding the development" of Titan in a 2018 letter addressed to OceanGate CEO Stockton Rush, who is one of the passengers aboard the missing vessel.
The letter wasobtained by The New York Timesand was later authenticated by ABC News.
The letter warned of possible "catastrophic" problems with Titan's development that could have "serious consequences for everyone in the industry." The letter goes on to say that OceanGate's safety claims were "misleading to the public" and insisted Titan be reviewed by a third-party organization.
The letter, which was addressed from the Marine Technology Society, was never approved to be sent to OceanGate though was quickly leaked to its CEO, according to committee chair William Kohnen.
"The letter did represent in 2018 the consensus by many people in the industry that they were not considering following the standard safety protocols and designs that the industry uses," Kohnen told ABC News.
Though he wishes it was not leaked at the time, nor now to The New York Times,Kohnen said he stands by the letter and its warnings.
"The company had indicated that their state of innovation was beyond, beyond what was allowable within the regulatory standards we have today and that they would proceed without certification," Kohnen said. "That worried a number of people in the industry."
Kohnen acknowledged that OceanGate did "heed" some of the comments made in the 2018 letter.
Search teams have covered 7,600 square miles
Search and rescue teams have now covered 7,600 square miles -- an area bigger than the state of Connecticut -- as they scour the ocean for the missing submersible, Coast Guard officials said.
A grid depicting the expanding search area is expected Tuesday night, according to a public information affairs lieutenant for the First District of the U.S. Coast Guard.
NASA weighs in on missing submersible
NASA released a statement Tuesday on the Titan, saying it remains "hopeful the crew will be found unharmed."
"NASA’s Marshall Space Flight Center had a Space Act Agreement with OceanGate, and consulted on materials and manufacturing processes for the submersible. NASA did not conduct testing and manufacturing via its workforce or facilities," the agency said.
US Navy sending salvage experts, equipment to help with submersible
The U.S. Navy said it's sending to the search site experts and equipment "designed to provide reliable deep ocean lifting capacity for the recovery of large, bulky, and heavy undersea objects."
The equipment, which can lift up to 60,000 pounds, and the experts will arrive in Canada Tuesday night, the Navy said.
National Security Council spokesperson John Kirby said earlier Tuesday that the Navy was"on standby" to help with the search for the missing submersible, because the Navy has "some deep-water capabilities that the Coast Guard wouldn’t necessarily have."
President Joe Biden is "watching events closely," Kirby said, adding that Biden and the White House offer their thoughts "to the crew onboard, as well as to the -- what is no doubt -- worried family members back on shore."
