The jet ski (pictured) is a Yamaha Waverunner and was last seen off the coast of Lymington heading across the Solent towards Langstone Harbour.
The coastguard would particularly like to hear from anyone who saw a single jet ski on the water with one person on board between around 6pm and 8pm yesterday (August 4), specifically in the vicinity of Cowes, Ryde Middle, Lee-on-the-Solent or Stokes Bay. The jet skier is believed to have been wearing a camouflage jacket.
Gosport independent lifeboat, Ryde Independent Rescue, Bembridge RNLI lifeboat, a Coastguard helicopter, the Hillhead, Ventnor and Bembridge Coastguard Rescue Teams and Calshot RNLI Lifeboat are searching the scene.
Anyone with information please contact Solent Coastguard on 02392 552 100 quoting incident number 022681.