Monkey Pirates is the final upgrade of the path 2 for the Monkey Buccaneer in Bloons Tower Defense 5. It costs $3825 on Easy, $4500 on Medium, $4860 on Hard and $5400 on Impoppable. Along with Aircraft Carrier, this upgrade is unlocked at Rank 29 in Bloons TD 5. It adds the MOAB Takedown Ability, which targets the strongest (the closest if bloons are the same) bloon on screen (excluding ZOMGs) and brings it down with a grappling hook. You get $300 for destroying a MOAB, $600 for destroying a BFB and $1 for other bloons. $TBA is earned from destroying a DDT.
They are really helpful on Round 5 in the Fast Upgrades Special Mission.
If the round is only one bloon (except the ZOMG), and the Monkey Pirate is used on it, you will finish right after the ability, even if the bloon hasn't been completely taken down.
If the ability takes down a Bloon with Camo or Regen status, the Bloon will become a normal bloon while it is being reeled in. If the bloon is damaged, it will be reeled as though it was on full health.
This is one way to make a camo bloon not camo in the special mission Covert Pops. Another way is to get a x-3 Mortar Tower