Looking through some internet sites [Uboat Net and Navypedia] plus books [O'Hara's German fleet at war 1939-1945 and Smith "Hold the Narrow Sea"], I have some more info on the channel naval engagements.
Royal Navy (United Kingdom)
http://www.uboat.net/allies/warships/types.html?navy=HMS&type=Destroyer
July 4th Stuka attacked the channel convoy OA178, sinking 4 merchants and damaging 6 more. Then they hit Portland Harbor and sunk a tug plus a flak ship and damaged 3 more merchant ships.
July 4th German SBoot attacked the channel convoy, sinking 3 merchants.
July 7-9th LW attacks damaged one Steamers and a minesweeper and slightly damaged a couple of more vessels
July 10th Stuka attacks damaged two Steamers and sunk two more while damaging a couple of auxiliary warships.
July 13th More Stuka attacks damaged two Steamers and sunk another as well as crippling the destroyer's
HMS Vanessa and under repair for 4 months
July 19th More Stuka attacks damaging the destroyer's
HMS Beagle which had to be taken under tow.
July 20th LW attacks damaged two armed trawlers while 3 Steamers were sunk along with the destroyer
HMS Brazen
July 24th three armed trawlers were sunk by LW attacks
July 25th Convoy CW8 was hammered by 90 LW aircraft including Stuka attacks and sunk 5 merchant vessels plus damaged another 5 vessels. Later two RN DD each took couple of bomb hits in further LW attacks.
July 26th 3 German Sboot attacked a convoy sinking three small merchant vessels
July 27th In the port of Dover
HMS Sandhurst HMS Codrington were sunk after several surprise by 2 dozen Me-109 Jubo /110 attacks , while
HMS Walpole was crippled, the day after it arrived as a replacement. In addition 40-escorted Stuka heavily bombed Dover and two more auxiliary warships were crippled, for the loss of 6 Stuka.
July 27th
HMS Wren sunk after attack by He111 bombers
July 29th
HMS Delight sunk after attack by 15 LW bombers
July 30th
HMS Whitshed is mined and crippled off the Thames
Aug 2nd a Merchant ship was sunk in an attack
Aug 8th 4 German SBoot attacked a channel convoy sinking 4 merchants and damaging a couple more. This was followed by several massed Stuka attacks that suffered 32 lost DB in exchange for the loss of 20 RAF fighters. These strikes sunk 3 more merchant vessels as well as damaging another 7 more.
Aug 24th
HMS Acheron Attacked by 40 Ju-88 suffered a direct hit and 3 near misses, that put the ship in repairs for 4 months.
Aug 31st
HMS Express struck a mine and was badly damaged, HMS Esk went to her assistance and hit mine and sank immediately, HMS Ivanhoe also went to her assistance and hit a mine and was badly damaged, so much so she she had to be sunk by HMS Kelvin.
Allied Warships of WWII - Destroyer HMS Esk - uboat.net
Sept 8th
HMS Galatea was damaged knocked out for a month ,by newly laid mines.
Sept 10/11th three British Destroyers swept the Channel at night and sank two barges a trawler and a tugboat.
Sept 11th
HMS Atherstone was crippled by 3 direct hits and 5 near misses from a Ju-88 squadron attack.
October 7 ;
HMS Hambeldon was crippled by mines laid by the KM near South Forland.
October 12th the 5 German TB expended the bulk of their ammo [~ 300 shells per TB], to sink the four anti invasion Trawlers. A RN destroyer squadron then set upon the Germans at night. Despite out gunning the Germans 3:1 [probably 10:1 in main gun ammo] ; being 3-4 knots faster and opening fire at ~ 5000 yards, the Germans escaped using smoke, maneuvers and clever deception involving depth charges to simulate minefield.
Dusk on the 17th October, A British Cruiser - Destroyer squadron of 7 warships engaged a flotilla of 4 German Destroyers also out gunning them 3:1. While the British opened fire at long range [25,000 yards], the German destroyers were only able to make 29knots in the moderate seas. The British seemed to close the range to 17,000 yards but several LW attacks on the British combined with torpedoes launched from the German destroyers allowed them to open range again and make good an escape. The British Cruiser expended 1200 shells getting a couple of near misses on one German Destroyer and hitting another destroyer twice with little apparent damage. In both of these encounters it took the British warships 8 hours to react to the German flotillas. As the British squadron returned to base they were attacked several times by RAF Blenheim's .All though both sides fired, no hits were recorded.
On the 19th October the
HMS Venetia was lost to mines laid by the KM in the Channel.
Oct 28th the
HMS Walpole and Windsor was crippled to mines laid by the KM in the south coast and out of repairs for months.
Over a three-month period in the Channel area [July-Oct], the LW/KM sank 8 destroyers and crippled 13 more [each out for months]. A further 37 Steamers and auxiliary vessels were also sunk, while another 33 were damaged.