A large combat knife with a clip-point blade. The knife uses a fast swing stabbing and slashing motion when used. The weapon can be modified with either a serrated blade to increase the damage, or a stealth blade to increase both the damage and the sneak attack damage, adding 0.6 to the Sole Survivor's existing stealth multiplier. The stealth blade modification also turns the blade black.
One is stabbed into a table within the way station along the train tracks west of Hangman's Alley.
In a small building occupied by super mutants just west of Goodneighbor, on the first floor on a counter near the dead mongrel.
Multiple knives may be found in Kendall Hospital, after taking the elevator up to the sixth floor, one will be stabbed into a table in the room to the left of the machine gun turret. Two more will be on a small table in the nursery area further in. Another may be found in the arena area, after climbing some wooden stairs it will be on a table next to a lead pipe.
On a grill in the back yard of a house overlooking Concord. Head east from the brahmin carcass with the bloodbugs.