CRT MANOEUVRING
Use the arrow keys to move the tug and A or D to rotate its hull. Vessel response is shown in the data panel below.

Container ship

8.0 kn
Tow positionSTERN
SLACK LINE

Dynamic bollard pull

0 t
Actual speed8.0 kn
Heading change0.0°
Braking force0 t
Steering force0 t
Line extension0%
Move
Rotate hull

Guided challenge

Brake the vessel from 8 to 5 knots.

Controls

↑ ↓ ← → Move tug · A / D Rotate hull · P Pause · F Full screen

Drag the left control to move. Hold the curved arrows to rotate the hull.

Move away to tension the towline. Turn the hull across the flow to increase force. The arrow shows the force on the ship.

Illustrative force model. Line extension shows slack to full reach, not a safe working load.

Take control of the CRT

Move the tug, rotate its hull, and see how towline force changes the vessel’s speed and heading.

Or explore freely from either tow position