The OceanNet buoy is approximately 5 meters in diameter and 18 meters in height. The buoy has a long keel, so that its motion in the roll and pitch axes is somewhat decoupled from wave motion.

There are four main sections of the buoy:

1. Radome - Contains the INTELSAT antenna in a pressurized chamber atop a steel pipe 1 meter in diameter.
2. Upper tower - An entryway to the buoy. Joins the top of the tower to the perimeter of the buoy's deck. This section consists of a conical shroud which reduces the wind drag, risk of capsizing due to high seas, and ice build-up.
3. Super structure - This section is mostly below the waterline and contains environmentally controlled generator and electronics rooms.
4. Keel - Approximately 2 meters in diameter and contains about 5000 gallons of fuel.