FT Sea Otter
RC Airplane Build Kit
Experience the versatile FT Sea Otter Seaplane. This RC plane is ideal for intermediate pilots. It masters air, water, and snow.
FT Sea Otter






The FT Sea Otter is storming the seas—and shocking the skies—with its "otter-ly" awesome performance!
Designed by the brilliant Peter "Mad Scientist" Sripol, this latest seaplane masterpiece brings fresh light to float flying. Crafted with newer pilots in mind, it offers a simpler, more approachable intro to seaplanes—making it an ideal intermediate step-up (not quite a first plane for most, but perfect for building skills and confidence).
This versatile beast conquers water takeoffs and landings, glides smoothly over snow, or launches effortlessly from solid ground. It feels incredible in the air—stable, responsive, and forgiving—while looking absolutely stunning on the water with its classic lines.
Whether you're splashing in ponds, carving snowy runs, or just enjoying land ops, the Sea Otter delivers pure fun and versatility that keeps the excitement flowing.
FT Sea Otter Specifications
- Weight Without Battery: 15.1 oz (428 g)
- Center of Gravity: 2.5" (64 mm) from leading edge of wing
- Control Surface Throws: 12-16 deflection - Expo 30%
- Wingspan: 40" (1016 mm)
Recommended Electronics
- Motor: 370 sized 1200kv minimum
- Prop: 8 x 4.5 prop
- ESC: 18-30 amp minimum
- Battery: 1300mAh -2200mAh 3S
- Servos: (4) 9 gram servos
Package Includes
- 4) Lasercut Brown WR Sheet
- 4) 23" Pushrod
- 1) Swappable Firewall
- 4) BBQ Skewer
- 4) Swappable Control Horn
- 2) Popsicle Stick
- 1) Velcro Battery Strap
FT Sea Otter Videos
*PLEASE WATCH RECENT BUILD VIDEOS BEFORE REMOVING ANY PAPER FROM THE FOAM! SOME VIDEOS MAY USE WHITE FOAM BOARD, WHICH IS NO LONGER AVAILABLE AND HAS NOW BEEN REPLACED WITH WATER-RESISTANT FOAM BOARD.*
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Best water plane!
I also have a Sea Duck and Sea Angel, but this BROWN foam Sea Otter is the real deal. With a C pack and 4S 2200 battery it is a hoot! I fly mine at a local park and wow the spectators with a splash down at the local pond. It rolls well and will loop if it’s a big one. I was showing off over a lake when I stalled the loop and it nosed in from 50’. It popped back on its floats and I happily motored it back to the beach. It was a hit at our club float fly and probably has more flights on it than any of my other planes! Great build: I reinforced all seams generously with hot glue and put popsicle sticks framing the canopy as well as packing tape around every inch of the outside. It’s faster in the air than one would think thanks to the Mustang wings! I love this plane.
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FT Sea Otter
I adore this model. Easy to build and easy to fly dispute advanced rating in the description. My Sea Otter has logged over 1000 water landings during the 2022 season so far. Looking forward to some snow this winter.
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Fun plane for Alaska
I live on a small lake so this is a great plane for me, summer and winter as it works great of of snow or water.
This plane does like power, I suspect it is high drag and low weight, but if you try to fly at low throttle it doesn't go well (or I don't do well -- also a possibility).
The airframe is resilient. It was my first non-delta ray plane and I abused it quite a bit. Eventually I filled the forward fuse with door/window crack filling foam to help compensate for damage and make sure it stayed afloat if I disabled it in the middle of the lake and had to deploy my boat. This actually seemed to help with the flight characteristics.
My next build has flaperons.

Canadian Dollar

