A bipartisan trio of congressmen sent a letter to the State Department on Friday requesting they reconsider a decision to sell the US Coast Guard Cutter Adak — a critical piece of 9/11 history — to Indonesia, The Post has learned.

The Adak, which oversaw the largest maritime rescue in world history on that tragic day, is set to be sold to the country even though a non-profit organization is prepared to pay for its return back to the states so it could be turned into a museum, memorial and education center.

Congressmen Gus Bilirakis (R-Florida), Charlie Crist (D-Florida) and Lee Zeldin (R-New York) signed the letter together, writing they are concerned about the pending sale.

“This historic vessel played a critical role coordinating search and rescue efforts and maritime security during 9/11,” the letter, obtained by The Post, reads.

“On September 11, 2001, the Adak arrived first at the scene to take on the role as the on-scene commander to coordinate the evacuation of more than 500,000 people stranded in lower Manhattan after the devastating attacks on the World Trade Center… [they made sure] any vessel in the harbor was directly providing rescue and assistance.”

The congressmen wrote as the 20th anniversary of the terror attacks approaches, they believe the Adak should be preserved for its historical significance.

“The men and women who served on the Adak displayed true heroism, and we believe that this sale to Indonesia fails to honor their service,” the congressmen wrote.

Earlier this week, the Coast Guard told The Post in a prepared statement it planned to sell the vessel to Indonesia as a means to protect the US’s national security interests but the congressmen believe there are other cutters that aren’t as significant that can be given instead.

They sent 18 questions to the State Department about the proposed sale, including to what extent the Coast Guard’s historian was consulted about the plan and if the agency has considered how 9/11 victims and survivors and veterans would feel about it.

They further asked if the Coast Guard considered Indonesia’s track record regarding marine environmental protection after studies have shown the country is one of the globe’s most notorious ocean polluters. The congressmen pointed to a central tenet of the Coast Guard’s mission, which is to protect the marine environment.

The USCGC Adak Historical Society has been petitioning the Coast Guard since last January to give them the boat when it is decommissioned later this year and pledged to cover any and all costs associated with returning the vessel, and are even willing to buy it.

“It’s refreshing to see Democrats and Republicans working together towards something that the majority of Americans agree with. Over the past few days, we’ve received thousands of messages supporting our efforts and more than 7,000 signatures on our change.org petition,” said James Judge, the historical society’s founder and a former Coast Guardsman who spent 13 months aboard the cutter while it was deployed for Operation Iraqi Freedom. 

“While this does not yet stop the sale of the Adak, it is certainly a step in the right direction. I would respectfully request and encourage all congressional representatives and senators to get behind this effort and submit additional letters calling for the sale to be abandoned. There are plenty of other 110-foot patrol boats in the Coast Guard, which are slated to be decommissioned, that can take the place of the Adak in the sale to Indonesia.”

A spokesperson for the State Department said in a statement “as a matter of policy and practice, we do not comment on the Department’s congressional correspondence” but they are “committed to consulting with Members and their staffs on matters of concern.”

“Under [the Excess Defense Articles program], the United States transfers surplus military equipment to build partner capacity, provide urgently needed capabilities, and deepen relationships with allies and partners,” the spokesperson said, adding the Adak would be used for Indonesia’s “national defense” and their efforts to counter “piracy” and secure key global maritime trade routes.

“The Administration is committed to rebuilding our security partnerships and the unparalleled quality of U.S. defense products and services the United States can provide strengthen defense partnerships and make our partners and our own citizens more secure. This proposed transfer furthers U.S. national security by strengthening an important regional partner and reflects our shared commitment in a free and open Indo-Pacific region.

“By strengthening our security cooperation partners with access to American defense articles and services, we bolster our security at home.”