But at 100kt it can't maneuver, so when a CVN changes course as it frequently will, that torpedo is wasted.
If USN CVNs r forward deployed in Canada or Greenland they could enter the Arctic Ocean unannounced, but will need a fleet of icebreakers ready; in ice covered waters/cold temp. & refreezing it won't be possible to move at sufficient speed to get wind over deck needed for CTOLs. That's why STOVLs r better suited in the Arctic!
The Russians r reopening/expanding/upgrading airbases on their islands & mainland there.
The term unsinkable aircraft carrier first arose during World War II, to describe the islands and atolls in the Pacific Ocean that became strategically important as potential airstrips for American bombers in their transoceanic war against Japan. To this end, the US military engaged in numerous island hopping operations to oust the occupying Japanese forces from such islands; the US Navy Seabees would often have to subsequently construct airstrips there from scratch — sometimes over entire atolls — quickly, in order to support air operations against Japan.
Malta and Iceland were sometimes described as unsinkable aircraft carriers during World War II, making Malta a target of the Axis powers. The US military is said to have considered Taiwan since the Chinese Civil War, and the British Isles and Japan during the Cold War, as unsinkable aircraft carriers. ..
In 1983, Japanese Prime Minister Yasuhiro Nakasone pledged to make Japan an "unsinkable aircraft carrier in the Pacific", assisting the US in defending against the threat of Soviet bombers. US Secretary of State General Alexander Haig described Israel as "the largest American aircraft carrier in the world that cannot be sunk". In arguing against production of the CVA-01 aircraft carriers, the Royal Air Force claimed that Australia could serve adequately in the same role, using false maps that placed Australia 400 miles west of its actual location.
During the Second World War, the United Kingdom gave some serious thought to building virtually unsinkable aircraft carriers from ice reinforced with sawdust (Project Habakkuk). A model was made, and serious consideration was given to the project, with a design displacing 2.2 million tons and accommodating 150 twin-engined bombers on the drawing board, but it was never produced.
[Russia could probably build a giant 1 out of concrete, with NP & capable of accommodating any aircraft.]
https://en.wikipedia.org/wiki/Unsinkable_aircraft_carrier
Ascension Island is ..about 1,600 kilometres (1,000 mi) from the coast of Africa and 2,250 kilometres (1,400 mi) from the coast of Brazil, roughly midway between the horn of South America and Africa. It is governed as part of the British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha, of which the main island, Saint Helena, is around 1,300 kilometres (800 mi) to the southeast. The territory also includes the sparsely-populated Tristan da Cunha archipelago, some 3,730 kilometres (2,300 mi) to the south, about halfway to the Antarctic Circle.
..During World War II it was an important naval and air station, especially providing antisubmarine warfare bases in the Battle of the Atlantic. ..
The island is the location of RAF Ascension Island, which is a Royal Air Force station, a European Space Agency rocket tracking station, an Anglo-American signals intelligence facility and the BBC World Service Atlantic Relay Station. The island was used extensively as a staging point by the British military during the Falklands War.
https://en.wikipedia.org/wiki/Ascension_Island
The atoll is located 3,535 km (2,197 mi) east of Tanzania's coast, 1,796 km (1,116 mi) south-southwest of the southern tip of India (at Kanyakumari) and 4,723 km (2,935 mi) west-northwest of the west coast of Australia..
In the early 1970s, setbacks to United States military capabilities in the region including the fall of Saigon, victory of the Khmer Rouge in Cambodia, the closure of the Peshawar Air Station listening post in Pakistan and Kagnew Station in Eritrea, the Mayaguez incident, and the build-up of Soviet naval presence in Aden and a Soviet airbase at Berbera, Somalia, caused the United States to request, and the UK to approve, permission to build a fleet anchorage and enlarged airfield on Diego Garcia, and the Seabees doubled the number of workers constructing these facilities. Following the fall of the Shah of Iran and the Iran Hostage Crisis in 1979–1980, the West became concerned with ensuring the flow of oil from the Persian Gulf through the Strait of Hormuz, and the United States received permission for a $400-million expansion of the military facilities on Diego Garcia consisting of two parallel 12,000-foot-long (3,700 m) runways, expansive parking aprons for heavy bombers, ..
https://en.wikipedia.org/wiki/Diego_Garcia#Arrival_of_the_US_Navy
Diego Garcia is strategically located, offering access to East Africa, the Middle East and Southeast Asia. The base serves as a staging area for the buildup or resupply of military forces prior to an operation. ..The United States saw the atoll as the "Malta of the Indian Ocean" equidistant from all points. The value has been proven many times, with the island providing an "unsinkable aircraft carrier" for the United States during the Iranian revolution, the Iraqi invasion of Kuwait, Operation Enduring Freedom, and Operation Iraqi Freedom. In the contemporary era, the atoll continues to play a key role in America’s approach to the Indian Ocean as a flexible forward hub that can facilitate a range of regional strategies. https://en.wikipedia.org/wiki/Diego_Garcia#United_Kingdom_military_activities
Andersen Air Force Base played a major role in the Vietnam War. The host unit was later designated the 36th Wing (36 WG), assigned to the Pacific Air Forces (PACAF) Thirteenth Air Force (13AF). https://en.wikipedia.org/wiki/Guam#Vietnam_War_and_later
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But it looks that Russia overall is more optimistic in financial situation and that many projects are now speeding very fast up.
Sputnik / Grigory Syssoew