#Overall interpretation

>! The top left corner is a small recreation of the whole image. It tells you what each part of the image is for.  
>!  
>! [![enter image description here][1]][1]  
>!  
>! It calls itself a "key", suggesting that it's necessary for the rest of the image. The four other black and white parts are binary numbers: 001, 010, 011, 100.

---

#Step 1

>! [![enter image description here][2]][2]  
>! The tiny rectangle at the bottom has 26 pixels. So we can write the English alphabet inside it, and three letters are highlighted in different colors:  
>!  
>! [![enter image description here][3]][3]  
>! 
>! This gives a nice interpretation of the patterns above - as Roman numerals!  
>! [![enter image description here][4]][4]

#Step 2

>! [![enter image description here][5]][5]

Now that we have step 1 done...

>! the colors across the left and top make sense: they're numbers, and the "across" and "down" sections form a nonogram puzzle!

The solution there is:

>! [![enter image description here][6]][6]


#Step 3

Okay, so what next?

>! There are a lot of repeating patterns in the nonogram solution. They look to form 6x6 "cells":  
>! [![enter image description here][7]][7]  

So, we should apply this step's instruction picture:

>!  [![enter image description here][8]][8]  
>! And then we get...
>! [![enter image description here][9]][9]  
>! These form nautical flags! The flags are (by row):  
>! `AQHMJA / BQUXHJ / USPFSQ / BXJPMF`.

#Step 4

Finally:

>!   
>! [![enter image description here][10]][10]   
>! These are the seven colors of the rainbow -- they've even been helpfully labelled that way in the transcription.
>! If we interpret these seven colors as numbers from 1 to 7, then Caesar-shift the flags forward by that amount, we get the message: **DROPPED RADIO, BUT IT SEEMS OKAY**.


  [1]: https://i.sstatic.net/2M19Q.png
  [2]: https://i.sstatic.net/XEoiK.png
  [3]: https://i.sstatic.net/eKFCW.png
  [4]: https://i.sstatic.net/NyClF.png
  [5]: https://i.sstatic.net/WCdKX.png
  [6]: https://i.sstatic.net/NJ1tl.png
  [7]: https://i.sstatic.net/s5mjb.png
  [8]: https://i.sstatic.net/lSeHY.png
  [9]: https://i.sstatic.net/Nm9MX.png
  [10]: https://i.sstatic.net/g4mkn.png