Today, regretfully, the Seamax company is going through some very difficult circumstances as noted in this 
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While Seamax design Miguel Rosario admits the business part of aircraft building is not his forte, this prolific designer is one of those types who can't sit still while the bean counters sort out Seamax, Inc.
"I am still working in airplane design (and race cars)," Miguel recently wrote via email. "I just developed a new amphibian that should have a low cost."
"I want to share with you the Duck, a design specially made for a Brazilian company called Fly Fox, located in Goiania, Brazil." Miguel cautioned, "So far, the info I am sharing with you… is for your personal information." He promised to supply more details; when I hear more I'll pass it along.
Fly Fox is the manufacturer of the Fox ultralight family consisting of V4, V5, and V6 (nearby images). Miguel noted that for the last 20 years, Fly Fox has been successfully manufacturing kit-built ultralights. "In manufacturing quality and flight characteristics, these are very good aircraft," Miguel expressed.
He continued, "What I made is a 'reassembled' Fox V5, using same wings and tail, repositioning
the boom on top, installing the engine in tractor position, and adding a small composite boat hull."
"The flight test program is finished," Miguel declared, "and Fly Fox is now preparing for production."
"[In the last] year, we developed manufacturing templates, where all parts, without exception, are drilled in the same pattern. We made improvements to the aircraft, such as tanks on the wings, laminar landing gear, Celeron pulleys, lighter fairings due to improved resin quality and several other improvements. During this time, parts were manufactured for the kits, today designed in Solid Works, finished with CNC and water cutting. All tubes are made of 6061-T6 aluminum, manufactured under strict quality control."
"Fox V5 Super Neo is an ultralight built side by side for the pilot who wants the "open cockpit feel." [With] the strength and safety of the Fox line, and with its docile controls, low stall speed and configuration of an aircraft with unsurpassed flight quality, V5 Super Neo will certainly be the choice for the adventurous aviator."
This video was composed from clips sent by Miguel Rosario in June 2024. The finished Duck may look different than seen in this proof-of-concept aircraft. It is seen here making its maiden flight.
https://youtu.be/2Hx812gqiuY
Article Updated July 17, 2024 — After this article was posted, Miguel Rosario reported, “Duck is still in tests. Now we will install a 912 ULS 80-horsepower engine, as requested by future customers.” He continued, “Molds are under construction for production, which we hope to start in three months” (approximately October 1, 2024). He finished, “I will keep you updated on all developments regarding Duck.” —DJ You probably know Seamax. This longtime, performance-oriented LSA seaplane was one of the first to make a splash in the U.S. light aircraft market way back in December, 2007. Today, regretfully, the Seamax company is going through some very difficult circumstances as noted in this State of the Seaplane Sector report. We don’t know the end of those stories yet. Nonetheless, Seamax M-22 designer Miguel Rosario remains active. You can’t keep a good man down but apparently you can keep him on the water.