The skipper was aboard his Golden Shore boat when his French counterparts began throwing rocks, smoke bombs and ball bearings last week.
Mr Chambers, 60, has been fishing in the Baie de Seine for three years but said he would be reluctant to return unless drastic action is done to protect British fishermen.
He said: “What we need is a Royal Navy frigate in there to give some support to us if we need it. We called the French navy but didn’t get any support. Someone is going to get killed if it happens again. One of those flares would go right through you.”
Mr Chambers, from Northern Ireland, added: “It has certainly put us off returning to the area. We want to be sure that there is support from our Government. We need to ensure the safety of our crew. We wouldn’t want to return unless we knew it was safer.”
The long-running dispute in the English Channel is over a scallop-rich part of the area French fishermen are prevented from harvesting due to domestic environmental laws.
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The waters are a source of tension as French authorities have been trying to preserve scallop stocks by banning their ships from fishing in the region over the summer, a measure that ends on October 1.
This law does not apply to the British, however – who angered the French by harvesting scallops.
Mr Chambers added: “The French were trying to get a reaction from the British. They came prepared, it was all set up.
“They had cameras there hoping to catch the British retaliating. Then they would have reported it as if the British had attacked them. But lucky enough everyone kept a cool head.”
Mr Chambers spoke after a former naval chief warned the UK has insufficient ships to patrol its waters.
Ex-First Sea Lord, Labour’s Lord West of Spithead, said co-ordination of the “few” ships which Britain has is “fragmented” – and that the lack of boats will have “disastrous” consequences post-Brexit.
On social media French fishermen appeared to be planning to step up their plans to attack British vessels.