This has the piraty mood you aimed for, well done. ;D
.. now for some hopefully constructive criticism:
Even though the song is only 1:40, you could have added some variation to the drums.
A snare or some other higher pitched percussion would be nice in addition to the kick.
The bass sounds like a bad emulation of a real bass. Either look out for some good soundfonts, a better plugin or aim for a more electronic approach. It also always helps to change the velocity of the notes a bit and slightly change their length and position. Just a little, with "snap to grid" turned off. This makes it sound more human as no one is capable of playing the same notes with exactly the same rhythm & velocity all the time.
Overall, this would fit perfectly into any game and movie with pirates in it. And every good game or movie should have pirates in it, right? ;D
Regards,
wandschrank