The Naval Long Service and Good Conduct Medal (1830) of the United Kingdom was introduced in 1830 and ratified by King William IV in 1831.

[1] In the order of wear prescribed by the British Central Chancery of the Orders of Knighthood, the Naval Long Service and Good Conduct Medal (1830) ranks on par with the Naval Long Service and Good Conduct Medal (1848) that replaced it.

[1][11] The obverse bears a fouled Naval anchor or "killick", surmounted by a Queen's crown and surrounded on both sides by an oak wreath.

[1][2][6] The reverse is inscribed "FOR LONG SERVICE AND GOOD CONDUCT" around the circumference, reading around from the bottom, and the inscription is encircled by a rope inside the raised rim of the medal.

Since the tiny ring did not readily accept the 1+1⁄2 inches (38 millimetres) wide plain Navy blue ribbon, many recipients had the suspension altered to a loop, large ring or one of a variety of bar suspenders, illustrated alongside and in the main picture by the medals awarded to Richard Sparling, Richard Bond and William Jago.

[15][1][16] Part of the reason for the discontinuation of the anchor type medal was that the reverse die disintegrated as a result of repeated use.

[1][16] The Naval Long Service and Good Conduct Medal (1848) that replaced the anchor type medal was of a completely new design, 36 millimetres (1.42 inches) in diameter, with the effigy of Queen Victoria on the obverse, the image of a three-masted man-of-war on the reverse[3] and a new Navy blue ribbon with white edges.