Meet the site
The SS Shamrock is one of several colliers lost at Catherine Hill Bay, the small coal port south of Swansea whose name itself comes from a wrecked schooner. Grey Nurse Charters describes her as a 1,427-ton, 78 m vessel built in 1878, lying in a shallow sandy area north of the Catherine Hill Bay coal loader and dived from the beach near the surf club. COAST Magazine records that she struck a rock soon after leaving the wharf in 1903 laden with 2,000 tonnes of Wallarah coal, and that she lies about 45 m from shore. What divers see depends almost entirely on the sand. Grey Nurse Charters notes that the structure visible varies with sand movement: after heavy seas scour the beach, iron plates, frames and pieces of machinery can be exposed; after long calm spells, much of the wreck may be buried. This makes the Shamrock a shallow exploration dive whose appeal is history and changeability rather than a fixed layout. Where metal is exposed, fish gather quickly: luderick, bream, whiting and flathead around the wreckage, with mado and silver sweep and the occasional ray or Port Jackson shark on the sand. Encrusting growth on the plates hosts small invertebrates and nudibranchs. Combined with the old coal loader and the remains of the SS Wallarah nearby, the Shamrock gives Catherine Hill Bay a compact heritage trail of the coal trade. It suits Open Water divers and snorkellers on flat days, and it is worth checking recent reports before visiting in case the sand has hidden it again. As with all historic wrecks in NSW, nothing may be removed.
Research this site before booking Stored site notes may be historical. These questions highlight gaps without turning old instructions into a current dive plan.
SS Shamrock wreck (Catherine Hill Bay) is recorded as Wreck in Newcastle & Lake Macquarie. The listed access is shore. Confirm the actual meeting point, route and permission to visit; a map pin does not establish any of these.
Topics flagged by the stored research
These are questions prompted by the existing notes, not a verified or complete hazard assessment.
- Water movement
- Ask how swell and local exposure affect the proposed entry, exit and route.
Historical access notes exist for this record, but have not been independently verified for current use. Request current directions from the operator or site manager rather than following an old entry description.
Questions, answered
Is SS Shamrock wreck (Catherine Hill Bay) suitable for my certification?
The record lists Open Water. That does not establish suitability for every route or day. Share your training, recent experience and equipment needs with the operator and ask about the specific proposed dive.
Can I book SS Shamrock wreck (Catherine Hill Bay) through YouDive?
YouDive is an independent research directory. Contact an operator directly to confirm whether it currently runs the trip, the inclusions and the booking terms.
What you might see
Luderick, bream, whiting, flathead, mado, silver sweep, rays, Port Jackson sharks, nudibranchs, encrusting growth
Location
Remains of a 78 m steam collier that struck a rock after leaving the Catherine Hill Bay wharf in 1903, lying in shallow sand north of the coal loader; exposure varies with sand movement.
Facilities nearby
Parking near the surf club; toilets at the surf club/beach reserve (seasonal); general store and pub in the village; air fills in Swansea (15 minutes' drive).
Before you make plans
Conditions, access and operator schedules can change. This is a location guide, not a dive plan. Ask a local operator about current conditions and suitability for your training and experience.
Sources & further reading
greynurse.com.aucoastmagazine.com.auRecord updated 26 Sept 2026. Source claims are being reviewed.