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Amphibious Jeep “Half-Safe” Co-Adventurer connects with


In mid July 2012, the Editor of received a kind email from Mr. Boye Lafayette De Mente, one of the co-adventurers on board the Amphibious Jeep called “Half-Safe”  during its leg of trip from Japan to Alaska.

Mr. De Mente had read on brief info about the Amphibious Jeep “Half-Safe”.  The info there lacked some details and here is how he expressed himself in the email.

Hello, 4WD people…

I just stumbled across references to the amphibious jeep HALF-SAFE and its round-the-world journey.
I was disappointed to see there were only a few words about the Japan to Alaska portion of the trip….
I was the 2nd half of the crew on that epic story, joining Ben Carlin in Tokyo in May 4, 1957 and hanging in with him until we reached Anchorage in September 4,…exactly 4 months later.”

We asked Mr. De Mente to send us some lines about his adventure with Mr. Carlin and the following info and pictures were received soon after and is published below.

We appreciate Mr. De Mente’s contribution and wish him and his family the best.


Two Adventurers Cross Pacific in Amphibious Jeep

Called “Half-Safe”

Journalist-Author Celebrates 50th Anniversary

Of Crossing Pacific Ocean & Bering Sea

in Amphibious Jeep Called “Half-Safe”

 Margaret Warren De Mente

PARADISE VALLEY, AZ—In the winter of 1956/57 Boyé Lafayette De Mente, my soon-to-be husband, was a Tokyo-based journalist working for The Japan Times.

The newspaper carried a brief article about the landing of an amphibious jeep called “Half-Safe” (after a popular deodorant of the day!) at Kagoshima, on the southern tip of Japan’s Kyushu Island.

A few weeks later the jeep, owned and driven by Ben Carlin, its Australian “captain,” arrived in Tokyo. Being of a sporting if not adventurous nature my husband-to-be contacted Carlin and made arrangements to interview him.

During the interview, Carlin invited Boyé to accompany him on the last leg of his around-the-world trip on the jeep—a journey that had started in 1948 from New York with his then American wife Elinore, but  which had ended abruptly some 500 miles off the eastern seaboard of the U.S. when the engine of the jeep conked out.

Carlin, his wife and Half-Safe were picked up by a Swedish freighter and deposited in Halifax, Nova Scotia. Carlin rebuilt the engine and once again the two set off across the Atlantic Ocean. After a stop in the Azores, they made the coast of Africa, and from there finally reached London by land and water.

Elinore went to work as a secretary while Carlin, over a period of several years (he was a notoriously slow worker), virtually rebuilt the jeep from scratch and they set off again, heading for the Near East, the Mid-East and Asia. Somewhere in India Elinore jumped jeep, left Carlin, and later divorced him.

Carlin recruited another “mate” (a young man from Australia) because the jeep required a two-man crew when at sea. This young man hung in with Carlin until they reached Kagoshima, Japan, and there he too decamped from the adventure, so Carlin was on his own when he arrived in Tokyo in the late fall of 1956.

For reasons Boyé has never fully explained, apparently to anyone, he accepted Carlin’s invitation to join him on the last, longest and most dangerous leg of the around-the-world journey, scheduled to begin in late April, by which time the storm-tossed North Pacific and Bering Sea would have quieted down.

A few days before the departure date a number of startling incidents involving Carlin and the jeep resulted in several of Boyé’s co-workers and friends urging him to quit the enterprise before it started.  But despite a calm and basically un-aggressive nature Boyé refused to back out.

On the morning of May 1, 1957, Half-Safe departed from Tokyo amidst great media fanfare, first from the front of the Mainichi Newspaper Building, and then from the front of the nearby Yomiuri Newspaper Building.

For the first few hours of the journey, several cars filled with reporters followed the Half-Safe as it made its way out of Tokyo and headed north. One man had been assigned by his company to go all the way to Wakkanai on the northern tip of Hokkaido with the jeep.  But a series of incidents involving Carlin resulted in him disappearing after three days and nights, never to be seen or heard from again.

Each day and night brought new incidents—not all of them involving Carlin’s irascible character—including a number that threatened to end the adventure before it really got started.  This included the jeep springing a leak when they were crossing the straits separating Honshu Island and Hokkaido, collisions with submerged rocks as they neared the port of Muroran, and finally, on what was to be the big day of their departure from Wakkanai, Hokkaido, Carlin jumped from the dock onto the jeep for the benefit of cameramen, cracking a section of the cabin that he had constructed to enclose the jeep from the outside elements. This caused another one-day delay for repairs.

Getting underway the next day turned out to have another set of dangers that threatened the jeep before it got away from the dock. From that point on, the adventure and the dangers really began. The  two adventurers encountered Russians, Japanese fishing nets, sea lions, technical problems, the frigid waters of the North Pacific and Bering Sea—and each other!

After enough incidents and adventures to fill several lifetimes, the Half-Safe arrived in Anchorage, Alaska on September 1, exactly four months from the day it left Tokyo. The safe arrival of the two in Alaska made news worldwide, and was listed in The Guinness Book of World Records, as well as Car and Driver’s Amazing Stories.

By agreement with Carlin, Boyé did not write his account of the crossing until five years had elapsed, to give Carlin time to get his own book published.

Boyé’s account of the crossing, which he chronicled in a book entitled ONCE A FOOL – From Tokyo to Alaska by Amphibious Jeep, reveals in precise detail the unexpected threats the two wayfarers encountered, including exact—but rare—conversations between them.

In his words, once they set off into the North Pacific the confines and noises of the jeep induced a kind of semi-coma that they came out of only when the daily 24-hour routine of “four on four off” was broken by some emergency.

Their two encounters with Japanese fishing nets and Carlin’s behavior following the last incident is high drama of the most absurd kind.

On another memorable occasion, Boyé stands on the tiny prow of the jeep for several hours in a cold rain and high seas pumping air into a torpedo-shaped yellow tank holding 660 gallons of gasoline to force gas into inboard tanks, with the tank jumping and rearing like a wild animal.

What is perhaps the most remarkable of all, Boyé hung in with Carlin until they reached Anchorage, where he also “jumped jeep,” parting company with his strange companion and flying to Phoenix, Arizona to see his family and recuperate from the ordeal.

And in yet another believe-it-or-not episode, 10 years after Boyé left the jeep in Anchorage, had spent another six years as a trade journalist in Tokyo (where we were married) and moved back to Phoenix, one of  our friends spotted Carlin driving Half-Safe down Van Buren Avenue in the center of the city.

Carlin had eventually made it back to Halifax, Nova Scotia then continued for several years touring the U.S. in Half-Safe, lecturing and showing films of the Pacific and Bering Sea crossing, ending up in his hometown of Perth, Australia where he died in the 1980s, and where Half-Safe is on permanent display at his old school.

Boyé went on to have an extraordinary career as the author of more than 40 books on the business cultures and languages of Japan, Korea, and China. We now make our home in Paradise Valley, Arizona, from which he has crossed the Pacific over 100 times—by air!

His book, ONCE A FOOL, became a bestseller in Alaska, and is still available from, other online booksellers, and through major retail chains. To see a full list, with descriptions, of Boyé’s 70-plus books (on Japan, Korea, China, Mexico, Arizona and Hawaii), go to his personal website:


Carlin standing and me squatting on the Half-Safe in front of the Mainichi Newspaper building in downtown Tokyo on the day of our departure.

Carlin and I attching the propellor to the jeep drive-shaft prior to our crossing of the ocean strait between Honshu Island and Hokkaido, the northernmost of Japan’s four major islands. The jeep leaked during the crossing so I spent several hours pumping the water out to keep us afloat. As we approached Hokkaido Carlin ran the jeep into submerge rocks.

Lowering Half-Safe into the ocean at Wakkanai, Hokkaido. I and a helper are positioned to keep the jeep from banging into the stone wall by pushing on it with our feet. There was a more telling event when Carlin jumped from the landing to the top of the jeep.

P.S. By the Fool Himself!

The above article was written by my wife on the occasion of the 50th anniversary of the event… and to answer one of the questions she posed about why I decided to join Carlin despite blatant signs of his volatile character, the answer is simple. At that time I had two strong-willed Japanese girl friends who had just met and were on the warpath.  I decided that I would be far safer with Carlin on the Half-Safe than I would be if I stayed in Japan.

Ultimately, that decision turned out to be wrong but at that time I had no idea of just how wrong!  There were so many incidents during the trip that could have spelled doom for both Carlin and myself it is a miracle that we survived…not all of them caused by Carlin’s shocking behavior.

To give credit where credit is due, Carlin was a master mechanic and navigator, and it was this factor that saved our lives.

One of the hundreds of unforgettable events: after we had been at sea for some 28 days, the last several days in a fog so thick you couldn’t see the front end of the jeep.

We were in the Bering Sea headed for the north side of Shemya Island in the Aleutian chain, but in the fog the sextant Carlin used for navigating had been useless.

On the 28th day I was doing the driving.  Carlin had opened the “lid” covering the passenger side of the jeep and was standing up on the seat, peering out. After several minutes he squatted a bit, leaned over and told me to turn the engine off.

The resulting silence was so unusual, so eerie and foreboding, it felt like the end of time.

A few minutes later he again turned to me and said: “Shemya should be right over there!”

For the next hour or so I stayed where I was and Carlin remained standing on the passenger seat, staring into the fog. The only sound was the quiet lapping of waves against the jeep.

And then in a matter of about three minute the fog dissipated.  And there, just where Carlin had indicated, was the island of Shemya, some 500 yards away. I was astounded.

Our mutual experiences on Shemya, which had a small U.S. military component and an emergency runway and refueling station for Northwest Airlines, were to impact on the rest of my life.

For those who might be interested in reading the whole story, here is the direct link to the buy page for the book:

One comment

  1. This is my first visit to 4wdonline and I am on a researching spree following a Jalopnik article on Half Safe. Truly the most epic automotive tale… in the world!

    Thanks very much for putting this article up, it was a great read on both accounts.

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