HMS New Betsey was one of 11 Thames sailing barges that the Admiralty purchased in 1794 for the British Royal Navy.

After the outbreak of the French Revolutionary Wars the Navy found itself without vessels capable of inshore work and riverine operations.

[1] On 10 July Miller and Mr. Edward Dawson, master of Grace, dined together on New Betsey, together with their families and other non-commissioned officers, while both barges were at Sheerness.

Dawson's trial took place 25 July at Maidstone, where the jury quickly found him guilty of murder.

[2] The "Principal Officers and Commissioners of His Majesty's Navy" offered New Betsey, of 80 tons (bm), for sale on 24 October 1798.