Armstrong Downwind Ocean Mk III
Foil › Downwind
Starboard, 2024
2337mm long · 7'8"
559mm wide
120mm thick
120litres
Listed by the brand, read off a photo, or worked out: where every number comes from
In one line
A narrower tail than most. A pin tail, a medium nose and gently curved rails.
derived · against the 66 other downwind foil boards in the atlas, read off the outlines.
As listed by Starboard
| size | length | width | thickness | weight |
|---|---|---|---|---|
| 100 L | 208.3 cm · 2083 mm | 533 mm | 120 mm | – |
| 105 L | 248.9 cm · 2489 mm | 457 mm | 120 mm | – |
| 120 L | 233.7 cm · 2337 mm | 559 mm | 120 mm | – |
| 135 L | 248.9 cm · 2489 mm | 584 mm | 120 mm | – |
Every size side by side, tails on one line, one scale
After it · 2025
The 2025 105 L is the same length and width as the 2024 105 L; its wide point moved 15 mm toward the nose. Open the 2025
listed length and width · wide point derived
From above, then from the side, true scale · the chosen size solid, the others dashed
Read off the 100 L outline · derived
53 %wide point, 1107 mm from the tail
3.91length over width
324mm wide 12″ from the tail
8,589cm² of planform
Read off the 105 L outline · derived
53 %wide point, 1323 mm from the tail
5.45length over width
245mm wide 12″ from the tail
8,800cm² of planform
Read off the 120 L outline · derived
53 %wide point, 1242 mm from the tail
4.19length over width
313mm wide 12″ from the tail
10,083cm² of planform
Read off the 135 L outline · derived
53 %wide point, 1323 mm from the tail
4.26length over width
313mm wide 12″ from the tail
11,246cm² of planform
Rocker of the 100 L · scaled from the 120 L measured
Rocker of the 105 L · scaled from the 120 L measured
Rocker of the 120 L · measured
Rocker of the 135 L · scaled from the 120 L measured
True proportions · dots at 10 mm and 12″ in from each tip · bracket: flat to within 3 mm · Measured on Starboard's photo of the 120 L. Tail end set by rule.
Original pages · 1
Closest outlines from other models, once stretched to one length and width · derived
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