Surgical face masks stored in some of the 40 containers that fell from a cargo ship in heavy seas off the Illawarra coast on Sunday have reportedly washed up on the Central Coast.
The Australian Maritime Safety Authority said the masks had appeared on Tuggerah beach at Magenta north of The Entrance on Tuesday.
Other goods have washed up on beaches in Sydney, including on the iconic Bondi Beach.
"We have received a report of some medical supplies washing up between Magenta and The Entrance," AMSA general manager of operations Allan Schwartz said on Tuesday.
"This information has been passed onto NSW Maritime. These correlate to drift modelling of debris and are consistent with items listed on the ship's cargo manifest."
Mr Schwartz said initial information indicated a wide range of goods were in the overboard containers, including household appliances and building materials.
He said AMSA staff boarded the APL England off Brisbane on Tuesday to inspect the ship and a number of protruding container stacks.
"No dangerous goods appear to be in the areas affected by the collapse of container stacks and AMSA is working closely with the ship's cargo agent to confirm exactly which containers went overboard," he said.
"We expect to have the outcome of today's seaworthiness inspection and confirmation of the next steps by tomorrow morning.
"Once the ship is safely in port we will begin our investigation which will focus on the safety of the ship including whether cargo was appropriately stacked and secured on board the ship, and any potential breaches of environmental pollution regulations."
NSW Maritime acting executive director Alex Barrell said Transport for NSW would lead the onshore clean up.
"We have been advising coastal councils of what they need to do if containers and their contents come ashore between Sydney and Gosford as modelling of sea currents suggested," he said.
"The first debris - boxes of flexible ducting, commonly used in heating and cooling systems - has come ashore at Bondi and Long Bay Beach. Debris has also been found by members of the public at Magenta and The Entrance.
"These are consistent with items on the ship's cargo manifest, along with building supplies, protective equipment, plastic bottles and aircraft seats."
Transport for NSW is advising members of the public to contact a dedicated hotline should they find debris.
Reports can be made via the NSW Maritime Info Line of 13 12 36 or via email to firstname.lastname@example.org.