Characteristics
| Length | 225 Feet |
| Beam | 46 Feet |
| Draft (Full Load) | 13 Feet |
| Displacement (Full Load) | 2,000 Tons |
| Speed | 16 Knots |
| Buoy Deck Area | 2,875 Square Feet |
| Officers | 7 |
| Enlisted | 40 |
| Main Engines | 2 CAT 3608, 3100 HP Engines |
| Propulsion | 10 foot Diameter Controllable Pitch Propeller |
| Bow Thruster | 450 HP Fixed Pitch Electric Thruster |
| Stern Thruster | 550 HP Fixed Pitch Electric Thruster |
| Power Generators | 2 CAT 3406 Engines |
| Crane | 10-ton hydraulic, 42-foot boom |
Fir is equipped with a controllable pitch propeller, bow and stern thrusters to allow for restricted water maneuverability. A state of the art electronic Machinery Plant Control and Monitoring System and Electronic chart display to aid in more efficient and overall watchstanding. Fir is also equipped with a Dynamic Positioning System which can keep the ship within 10 meters of position in up to 30 knot winds and 8 foot seas.