onosm.org submitted note from a business:
Name: Sydney Premium Charters
addr:housenumber=2
addr:street=Tonkin Street
addr:place=Calico Marina
addr:city=CRONULLA
addr:postcode=2230
Phone number: 0455 44 55 66
Website: https://www.sydneypremiumcharters.com.au/
Social Network: https://www.facebook.com/SydneyPremiumChartersFishing/
Opening Hours: 7 days - 8.00am - 5.00pm
Category: Boat Charters
Accepted payment methods:

likely a sewage pumping station, needs ref

sewage pumping station; needs ID/ref

Path Stöpsel at creek. Creek crossing not possible because of d3nse Bambi vegetation

No footpath here. All overgrown by denselben bush

New walkway here

via StreetComplete_ee 61.1

Unable to answer "Is this still here?" – Oyster Bay Christian Church (Christian Church) – node/2620285557 via StreetComplete 61.3:

Residential house

sydney water facility?