The Hamble River H.L.1 Seaplane was a British pusher biplane seaplane designed by Frank Murphy and built by Hamble River, Luke & Co Limited at Southampton.The H.L.1 was exhibited uncompleted at the exhibition at Olympia in February 1914 fitted with a 150 hp (112 kW) NAG C.II engine. It was ordered by the British Admiralty to be fitted with a 160 hp (119 kW) Gnome engine and issued with serial number 105. The H.B.1 was launched in May 1914 but partly sank and was damaged due to being unbalanced.