Sub Base Platypus

Sub Base Platypus

It’s so awesome when you find a place that is interesting and quirky, filled with lots of things to do and also historically meaningful. Sub Base Platypus is one of these places and I really look forward to watching this place as it transforms!

Owned by The Harbour Trust, Sub Base Platypus is an on-going Sydney development that is one to watch, but also great to enjoy now. I love that the area will be open in phases so locals and visitors can watch as it transforms.

A bit of history

Sub Base Platypus was originally opened in 1876 as a Gasworks. The Gasworks continued operating up until 1932.

The site then remained vacant until 1942 when it was established as a naval torpedo manufacturing facility. In 1967 it was established as a submarine base for HMAS Platypus by the Royal Australian Navy.

In 1999 the base was closed and the Royal Australian Navy moved out. The site lay vacant for some time until its handover to the Harbour Trust in 2005. Since 2005 the site has gone through community consultation, site remediation and is currently undergoing renewal works.

Come see the site as it transforms

First Stage Opens

The first stage of the site has now been opened to the public. A key feature of the first stage is a boardwalk that joins the site and neighboring Kesterton Park together. The boardwalk is modern and gives visitors a unique view of the site and the harbour.

To help navigate your way around the area, check out the sites map or make sure to look for the information boards around the area.

Sub Base Platypus Boardwalk

The area also now includes a submarine themed playground, excellent BBQ area and a submarine memorial.

Enjoy the facilities

Birds Eye View

When at the site make sure to take a walk up the stairway to Kiara Close. Whilst a bit of a walk up,. you will be rewarded with fantastic views of both the harbour and the Sub Base Platypus site.

Worth the walk up

Enjoy Kesterton Park

Kesteron Park is located next door to Sub Base Platypus, so why not enjoy a picnic and a walk here after your visit. You will find another playground and toilet facilities here. It is a great spot to admire the harbour and watch the ferries come and go.

Kesterton Park is a great way to end the day

Five reasons to visit Sub Base Platypus

  1. Soak up the history of this former submarine base
  2. Enjoy a picnic and play at the submarine themed playground
  3. Climb the staircase for great harbour views
  4. Walk the over harbour boardwalk
  5. Enjoy some boat watching at nearby Kesterton Park

Freedays summary

  • Entry: Free
  • Toilets: Yes (located at Kesterton Park)
  • Wheelchair friendly: Yes
  • Free carparking: Yes (on-street only). Visitors can park on High Street North Sydney and enter via Kesterton Park or Kiara Close. If entering from Kiara Close, note that the entry is via a steep staircase)
  • Free BBQ facilities: Yes
  • Time to spend here: 1 hour to all day
  • Food available: No
  • Address: 118 High Street, North Sydney NSW 2060
  • Further details: Visit Sub Base Platypus directory listing

More Free Things to do

After exploring the base why not:

  • Walk across the Harbour Bridge
  • Have a picnic lunch at Milsons Point



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