I need to saw off a mast - need some advices

[agprice22]

never seen a sailboat that had other than an aluminum or wooden mast

Carbon fiber...

Of course, I doubt that is the case here

 

[Project_Mayhem]

Just as others have stated, I'd recommend a cordless sawzall. It could be done with a grinder but it's more time consuming. A cordless saw would also make quick work of this. It will wear away the blade much faster than wood