7   A pril ▁ 1 9 7 8 , ▁Mus ke in ▁sa iled ▁from ▁Le ▁Hav re ▁with ▁ 3 3 ▁b arg es ▁under ▁the ▁command ▁of ▁General ▁Point , ▁but ▁on ▁ 8   A pril ▁he ▁found ▁his ▁passage ▁blocked ▁by ▁the ▁British ▁fr ig ates ▁HMS ▁Diam ond ▁under ▁Captain ▁Sir ▁Richard ▁Stra chan ▁and ▁HMS ▁H yd ra ▁under ▁Captain ▁Sir ▁Francis ▁La fore y . ▁At ▁ 1 6 : 0 0   the ▁fr ig ates ▁corner ed ▁the ▁b arg es ▁in ▁the ▁mouth ▁of ▁the ▁River ▁Or ne ▁and ▁opened ▁fire , ▁but ▁Diam ond ▁ground ed ▁soon ▁afterwards ▁and ▁although ▁the ▁fr ig ate ▁was ▁brought ▁off ▁after ▁darkness , ▁neither ▁side ▁was ▁able ▁to ▁inf lict ▁serious ▁damage . ▁ ▁On ▁ 9   A pril ▁the ▁French ▁fl ot illa ▁was ▁able ▁to ▁leave ▁the ▁Or ne ▁River ▁and ▁anchor ▁in ▁the ▁har bour ▁of ▁Bern ières - sur - Mer , ▁but ▁the ▁arrival ▁of ▁the ▁fourth ▁rate ▁HMS ▁Adam ant ▁under ▁Captain ▁William ▁H oth am ▁persu aded ▁Mus ke in ▁to ▁return ▁to ▁the ▁more ▁shelter ed ▁anch orage ▁at ▁the ▁mouth ▁of ▁the ▁Or ne . ▁As ▁he ▁returned ▁east ward , ▁he ▁again ▁came ▁under ▁fire ▁from ▁Diam ond ▁and ▁H yd ra . ▁The ▁French ▁fl ot illa ▁then ▁shelter ed ▁under ▁the ▁batter ies ▁at ▁S allen elles ▁until ▁the ▁damage ▁was ▁rep a ired . ▁Over ▁the ▁next ▁two ▁weeks ,