Helder, 1803-1807
Type: Floating Battery (1803) ; late Dutch 5th rate (1803) ; Armament 36
Renamed : 25 Mar 1803 ;
Disposal date or year : Jun 1807
Notes:

25 Mar 1803 late Dutch frigate Ambuscade entered service with the RN and renamed Helder.

20 Jun 1803 according to the newspapers, following approaches by the merchants and ship owners at Hull that the port warranted some protection, the Helder was allocated to the Whitebooth Roads, in River Humber, as a Floating Battery.