10/12/2026
THE ARCTIC IS OPENING. DOES AMERICA NEED MARE ISLAND AGAIN?
Last August, we shared an idea floated in a leading defense-industry publication: reopen Mare Island as a U.S. Coast Guard public shipyard serving the Pacific.
It was offered as a thought experiment, prompted by the decline in America’s shipbuilding and repair capacity, a warming Arctic, and a fast-changing strategic landscape.
The case is simple. The Coast Guard has just one public shipyard—in Baltimore, on the East Coast—while a growing share of its fleet and missions are in the Pacific. That shift traces back in part to then–Secretary of State Hillary Clinton’s influential 2011 article, “America’s Pacific Century,” which launched what became known as the “Pivot to the Pacific.”
Mare Island still has the historic graving docks and heavy industrial waterfront that once made it one of America’s great naval shipyards. And recently, Mare Island Dry Dock proved those facilities could still overhaul Navy, Coast Guard and NOAA vessels, employing hundreds of workers and contractors at its peak.
In the years since the Pivot, developments in the far north have become impossible to ignore.
THE ARCTIC WAS THE COLD WAR’S FRONT LINE
In the early Cold War, U.S. defense planners understood a basic fact of geography: the shortest route between the Soviet Union and North America’s industrial heartland ran over the top of the world. Soviet long-range bombers made Alaska, northern Canada and Greenland critical terrain.
The response was one of the great engineering feats of the 1950s: the Distant Early Warning (DEW) Line, a chain of radar stations stretching across Alaska, northern Canada and Greenland. Its job was to spot Soviet bombers as far north as possible and buy precious minutes for interceptors, air-defense missiles and the nation’s leaders.
The Arctic wasn’t just a frozen wilderness. It was a battlespace—a northern avenue of attack on the United States and Canada.
Then the threat changed. Intercontinental ballistic missiles made bomber defense less central, the Cold War ended, and the Arctic faded from public view. Distance and sea ice seemed protection enough.
That era is ending.
TODAY’S NORTHERN THREAT IS BIGGER AND MORE COMPLEX
The Arctic’s strategic map is changing—and climate change is only part of the story.
Warming is shrinking and thinning the sea ice, opening waters that were closed to most surface ships for much of the year. At the same time, the military picture on the far side of that ice has changed profoundly.
Today’s northern threat goes far beyond bombers. It includes ballistic missiles, hypersonic glide vehicles, long-range cruise missiles, nuclear-powered submarines and increasingly capable naval forces operating across the Arctic and North Atlantic.
Russia has modernized much of its strategic arsenal. It has fielded the Avangard hypersonic glide vehicle on land-based ICBMs, and its Northern Fleet, based on the Kola Peninsula, operates modern ballistic-missile submarines alongside attack submarines armed with long-range Kalibr cruise missiles.
So the Arctic and North Atlantic are no longer just routes Russian submarines might travel through. They are increasingly places from which long-range weapons could be launched.
That’s why Greenland and the Greenland-Iceland-United Kingdom (GIUK) Gap remain vital for missile warning, submarine detection and defense of the North Atlantic.
The stakes reach well beyond U.S. shores. The High North is the northern approach not only to Alaska and North America, but also to Canada and NATO’s European members. A submarine, bomber or missile crossing the region doesn’t encounter separate American and European theaters. Up here, defending North America and defending Europe are increasingly the same job.
Alaska anchors the western end of that defensive arc. Greenland sits at the hinge between North America, the Arctic Ocean and the North Atlantic. Together with Iceland and allied bases farther east, they provide critical geography for early warning, surveillance, submarine detection, reinforcing Europe and protecting the transatlantic sea lanes.
The goal isn’t to militarize the Arctic for its own sake. It’s to keep a changing Arctic from becoming a strategic vacuum. A stronger, more persistent U.S. and allied presence improves warning, complicates an adversary’s planning and strengthens deterrence—making it less likely that a crisis becomes a conflict.
In short, U.S. strength in Alaska, the Arctic and Greenland isn’t just homeland defense. It strengthens NATO’s entire northern flank.
Then there’s China.
During the Cold War, U.S. Arctic strategy focused almost entirely on the Soviet Union. Today, the United States must plan for two major nuclear-armed competitors—Russia and China—whose Arctic interests increasingly overlap.
China is building a larger blue-water navy that can operate far beyond the western Pacific, and its Arctic presence is already visible. In 2025, the Coast Guard encountered five Chinese research vessels operating over the U.S. extended continental shelf in the Arctic—the most ever recorded. The cutters Healy, Waesche and Storis helped monitor them. In 2026, the Coast Guard again tracked Chinese icebreaking research vessels heading north through the Bering Sea.
THE ICE THAT PROTECTED THE ARCTIC IS RETREATING
These geopolitical shifts are colliding with a profound physical transformation of the Arctic itself.
For most of modern history, sea ice sharply limited surface activity in the Arctic Ocean. That barrier is becoming less dependable.
Satellite records since 1979 show a steep decline. September sea ice has fallen from roughly 7 million square kilometers early in the satellite era to roughly 4–5 million in recent years. And it isn’t just less ice: what remains is generally younger and thinner, melting earlier and freezing later.
That matters most for Alaska.
The Bering Strait—only about 51 miles wide between Alaska and Russia—is the gateway between the Pacific and Arctic oceans. As the ice retreats, the strait and the Chukchi Sea are turning from an icy barrier into navigable shipping lanes. From there, ships can head west along Russia’s Northern Sea Route toward Europe, or east through the Northwest Passage toward the Atlantic.
Alaska is no longer just America’s northern edge.
It is becoming America’s maritime front door to the Arctic.
The bigger picture: the Arctic is shifting from a frozen buffer into an accessible operating theater linking the Atlantic, Pacific and Arctic oceans—one where the United States must reckon with Russia and China at the same time.
THE COAST GUARD’S MISSION IS CHANGING WITH IT
This isn’t just about buying more icebreakers because there’s less ice.
The Coast Guard is being asked to maintain a persistent American presence across a vast, hostile region where sovereignty, surveillance, strategic competition, commercial shipping, fisheries, search and rescue, environmental response and national defense all overlap.
That’s where the Coast Guard differs from the Navy. On a single Arctic deployment, one cutter can monitor foreign vessels, enforce U.S. fisheries and environmental laws, investigate activity in U.S. waters, rescue mariners in distress and support national defense.
The strategic equation is simple:
Presence equals influence.
During the Cold War, Arctic defense relied on fixed radar sites like the DEW Line and on aircraft ready to respond. Today the challenge is maritime as well as aerospace: submarines, warships, research vessels and commercial traffic can now reach waters that were once largely off-limits. That makes persistent maritime presence—and the cutters that provide it—central to modern northern defense.
But presence requires ships that can operate there, and shipyards that can keep them running. Combined with the capabilities of Canada and our European NATO allies, a sustained U.S. presence makes the northern approaches more visible, more defensible—and harder for any adversary to exploit.
THE COAST GUARD IS BUILDING AN ARCTIC FLEET
The Coast Guard is responding. It plans 11 Arctic Security Cutters on top of the Polar Security Cutter program. The first two are slated for Kodiak, Alaska, with another at Seward.
That’s a major shift. Instead of periodically sending cutters north from the Lower 48, the United States is building a permanent, ice-capable presence in Alaska.
Which raises a hard question:
Where do you maintain them?
An Arctic strategy built on more ships needs an industrial strategy to keep those ships running. And that’s where the weak spot in America’s Arctic buildup shows.
ALASKA CAN’T YET SERVICE ITS BIGGEST ICEBREAKERS
Alaska’s shipyards can’t drydock the Coast Guard’s largest polar icebreakers.
Ketchikan’s biggest floating drydock lifts 10,000 long tons; Seward’s Syncrolift is considerably smaller. Neither can handle a Healy- or Polar Star-class icebreaker.
So what are the options?
1. Build new drydock capacity in Alaska. The location makes sense, close to the Coast Guard’s growing operations. But building a major shipyard from scratch—and assembling the skilled workforce to run it—would take an enormous investment.
2. Rely on Canada. The government-owned Esquimalt Graving Dock near Victoria, British Columbia, is about 1,173 feet long and already serves Canadian naval, coast guard and large commercial vessels. It’s big enough for Healy/Polar Star-size ships, and unlike Alaska, the surrounding metro area offers a real labor pool.
It’s an attractive allied solution, but it raises a fair national-security question: Should America’s growing Arctic fleet depend on a foreign shipyard for critical heavy maintenance? The real obstacle isn’t Canadian capacity. It’s U.S. law (14 U.S.C. § 1153), which bars overhauling U.S.-homeported Coast Guard cutters in foreign yards. Changing that would take an act of Congress.
3. Look to Seattle and the Pacific Northwest’s existing commercial shipbuilding industry.
4. And then there’s Mare Island.
WHERE DOES MARE ISLAND FIT?
Let’s be upfront: Mare Island isn’t in Alaska. That’s its biggest drawback.
Under realistic planning assumptions, a Healy-size ship would need roughly 7–8 days each way between Mare Island and Seward, versus about five days from Esquimalt. That gap is real, and it shouldn’t be minimized.
But geography isn’t everything. A shipyard also needs large drydocks, deep water, heavy industrial infrastructure, transportation links, housing—and, above all, a large skilled workforce and industrial ecosystem that can sustain it for decades.
And unlike building a new public shipyard from scratch, Mare Island already was one.
Its surviving drydocks and waterfront are what remains of more than a century of federal investment. And this isn’t just nostalgia. At its peak in 2023, Mare Island Dry Dock was working on Navy, Coast Guard, NOAA and Maritime Administration vessels—a photo from that year shows ships from all four agencies in the yard at once.
That doesn’t automatically make Mare Island the answer. But it does earn Mare Island a place in the national conversation.
DOES AMERICA NEED THE SHIPYARD AGAIN?
Climate change alone would make America’s Arctic presence more important.
But it’s happening alongside Russia’s nuclear modernization, China’s rise as a major nuclear and naval power, growing Russian and Chinese activity in the Arctic, an expanding Coast Guard fleet, and a national shortage of heavy maritime industrial capacity.
Those forces are converging.
Thirty-three years after Mare Island was selected for closure, the assumptions that made it seem unnecessary look a lot less certain.
America needs ships. It needs people who can maintain them. And it needs places to do that work.
Maybe it’s time to take another look at Mare Island—not as a relic of America’s maritime past, but as infrastructure for its maritime future.
What do you think? Share your thoughts in the comments.
