A lifeboat crew was called out yesterday after smoke began issuing from a jetty.
The RNLI were called to the Purfleet deep water terminal near the Dartford Bridge at around 5.20pm on Tuesday.
The crew stayed as a precautionary measure for 40 mins while Essex County Fire and Rescue Service extinguished the small fire.
An RNLI spokesman said: "It was a small fire.
But because the jetty is made of the wood there is always the risk of the situation worsening."