The FDNY yesterday unveiled a fireboat on the West Side that’s billed as the most technically advanced in the world.

PHOTOS: Fleet Week Kicks Off

The $27 million vessel is named the Three Forty Three. That’s in honor of the 343 fire heroes killed on 9/11.

It has features that can detect and protect firefighters from bioterror and nuclear threats, and at 140 feet is the longest fireboat in the world.