TOKYO – Analysts who have studied photos of a half-dozen ominous new North Korean missiles showcased recently at a lavish military parade say they were fakes, and not very convincing ones, casting further doubt on the country’s claims of military prowess.

Since its recent rocket launch failure, Pyongyang’s top military leaders have made several boastful statements about its weapons capabilities.

But the weapons displayed April 15 appear to be a mishmash of liquid-fuel and solid-fuel components that could never fly together. Undulating casings on the missiles suggest the metal is too thin to withstand flight. Each missile was slightly different from the others, even though all were supposedly the same make. They don’t even fit the launchers they were carried on.

“There is no doubt that these missiles were mock-ups,” Markus Schiller and Robert Schmucker, of Germany’s Schmucker Technologie, wrote in a paper posted recently on the website Armscontrolwonk.com that listed those discrepancies. “It remains unknown if they were designed this way to confuse foreign analysts, or if the designers simply did some sloppy work.”

The missiles, called KN-08s, were loaded onto the largest mobile launch vehicles North Korea has ever unveiled. Pyongyang gave them special prominence by presenting them at the end of the parade, which capped weeks of celebrations marking the 100th anniversary of the country’s founding father, Kim Il Sung.