The Navy's Anchorage
HMAS Penguin Medallion Challenge Coin
HMAS Penguin Medallion Challenge Coin
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Commissioned on 14 July 1942, HMAS Penguin is situated in Balmoral on Middle Head in Sydney Harbour, with an annex at Pittwater on Sydney's Northern Beaches. Its primary role is to provide trained personnel to the fleet, and it is home to the ADF Diving School, the RAN Hydrographic School, and the RAN Medical School.
Design & Significance
Design & Significance
Every element of this coin's design carries symbolic weight, true to naval tradition:
- Rope Roundel — the encircling rope border represents a strong, unbreakable bond — a symbol of loyalty and security.
- Blue — denoting unwavering loyalty, faith, and strength; in naval tradition, blue represents the sea itself.
- Gold — representing wisdom, constancy, faithfulness, glory, and generosity, gold lends the badge its distinctive, striking finish.
Coin Specifications
Coin Specifications
- Diameter: 48mm
- Thickness: 4mm
- Material: Zinc alloy with shiny gold plating
- Finish: Epoxy coating over raised metal detail
- Presentation: Supplied in a protective PVC pouch

Commemorate Navy's home of mine warfare with this finely detailed challenge coin, honouring the history, heraldry, and spirit of Navy. A distinctive keepsake for serving and former personnel, collectors, and anyone with a connection to Australia's naval warfare training heritage.