Design
Biscayne Bay is the fourth ship in a class of ice-breaking tugboats designed to have greater multi-mission capabilities than the 110' Calumet-class harbor tug (WYTM). The most significant differences include: greater horsepower, greater speed, longer range, increased ice-breaking capability, a hull lubrication system (bubbler), greater degree of automation, and better habitability.
Read more about this topic: USCGC Biscayne Bay (WTGB-104)