Helicopters landing in rough seas require skilled pilots and special techniques to ensure safety. 

The pilot must first carefully choose the landing spot based on the direction and height of the waves, wind speed and direction, and the proximity of other vessels.

Once the landing spot is chosen, the pilot will approach the surface of the water slowly, with the helicopter’s nose tilted slightly upward to reduce the risk of a wave hitting the rotor blades. 

As the helicopter hovers above the water, the pilot will carefully monitor the waves and use small adjustments to maintain the helicopter’s position and altitude.

When it’s time to touch down, the pilot will carefully lower the helicopter onto the water’s surface, using a controlled descent to prevent the helicopter from plunging too deep into the water or bouncing back up into the air. The landing gear is designed to absorb the impact of the landing and keep the helicopter stable on the water.

During the landing and takeoff, the pilot must also be prepared for unexpected wave movements and be able to react quickly to keep the helicopter safe. Helicopters equipped for rough seas often have specialized features such as floatation devices and water-resistant electrical systems to ensure survival in case of an emergency.