Dive Site: Ayr

About Ayr

The SS Yongala shipwreck, a celebrated dive destination, lies off the coast of Alva Beach, near Ayr, Queensland, providing a vibrant artificial reef experience. This 109-meter passenger and cargo steamer sank during a cyclone in 1911, and now rests on its starboard side, transforming into a diverse ecosystem after being rediscovered in 1958 and declared a historic shipwreck in 1981. The wreck's upper structure begins at 15 meters, descending to a sandy bottom at 29-33 meters. The entire vessel is richly adorned with a stunning array of hard and soft corals, including black coral trees, gorgonians, sponges, and sea whips, offering a spectacular canvas for marine life. The Yongala is renowned for its exceptional marine biodiversity, attracting large pelagic species, sharks, rays, and vast schools of fish year-round. While strong currents and variable visibility can be present, calm conditions offer spectacular 25-meter visibility, revealing an astonishing concentration of life. From June to November, encounters with whales are possible, adding another layer to its appeal. Diving the SS Yongala involves a short boat transfer from Alva Beach, near Ayr. Divers must adhere to strict rules against wreck penetration to preserve its integrity and respect its status as a maritime grave. The experience emphasizes observing the exterior of the well-preserved ship and its incredible surrounding marine ecosystem.

Dive site facts: Ayr

Depth

15–33 m

Current

Strong, variable

Visibility

10–25 m

Water temperature

24–29 °C

Entry

Boat from Alva Beach

Level

Advanced Divers

Dive type

Wreck, biodiversity, pelagic

Night dive

Possible (on liveaboards)

Region / port

Queensland, Australia

Coordinates

19.5714° S, 147.6001° E

Conditions & Currents

The SS Yongala is frequently affected by strong currents, which can vary in strength and direction, making this an advanced dive. Divers must be prepared for potential drift and exert effort to navigate the wreck, especially when currents are running. Occasionally, conditions are too severe for diving, leading to cancellations for safety. Entry and exit often require using a mooring line for controlled descent and ascent. While conditions can be challenging, a day with light winds and calm seas can offer spectacular 25-meter visibility, though it can also drop to 10-15 meters on other days. There are no notable thermoclines mentioned, but surge can be present. Boat traffic primarily consists of dive operators, who manage entry and exit procedures carefully.

Marine life & sighting chances

Queensland grouper

common

Marble ray

common

Trevally

common

Barracuda

common

Mangrove jack

common

Batfish

common

Olive sea snake

common

Loggerhead turtle

common

Hawksbill turtle

common

Green turtle

common

Tawny nurse shark

occasional

Smalleye stingray

rare

Maori wrasse

common

Bull shark

occasional

Dive profile & how the dive runs

Your dive to the SS Yongala begins with a short, fast boat ride from Alva Beach. Upon arrival, you will typically descend along a mooring line, which is crucial for managing potential currents. The wreck itself rests on its starboard side, with the shallowest part of the hull around 15 meters and the deepest on the sandy seabed at 29-33 meters. Dives commonly start at the stern or bow, following the length of the 109-meter vessel, exploring the exterior features such as the rudder, propeller, winches, and the coral-encrusted masts that lie off the wreck. You'll navigate around the intact structure, observing portholes and the bridge area. Penetration inside the wreck is strictly prohibited to preserve its integrity and respect its historical significance. Ascent is also conducted along the mooring line, with a safety stop typically performed at 5 meters near the line, where a rich array of smaller fish often congregate.

Underwater photography

The SS Yongala offers exceptional opportunities for wide-angle photography due to the sheer size of the wreck, the extensive coral growth, and the abundance of large marine life. A fisheye or wide-angle lens (e.g., 8-15mm or 16-35mm equivalent) is highly recommended to capture the full scope of the ship and the massive schools of fish. For capturing the vibrant corals and marine life, external strobes are essential, especially given the depth and potential for lower visibility. Buoyancy control is paramount to avoid disturbing the silty bottom and to navigate the wreck without contact. Ethical photography means never touching the wreck or harassing marine life, respecting the site's protected status. Patience can also yield stunning shots of the resident giant groupers or cruising pelagics.

Combine with nearby dive sites

• Townsville

  A larger port for accessing the Yongala, though with a longer boat ride.

• The Museum of Underwater Art

  A unique art installation dive site accessible from Townsville.

• Moore Reef

  Part of the Great Barrier Reef, offering coral gardens and diverse reef fish.

Getting there & logistics

Access to the SS Yongala is typically arranged through dive operators in Ayr, Queensland. The nearest major airport is in Townsville (TSV), which is about an hour's drive north of Ayr. From Ayr, divers travel to Alva Beach, a remote launch point, for a fast 30-minute express boat ride to the shipwreck. While Townsville also offers trips, the journey is considerably longer, taking about 3 hours by fast boat. Most trips are day excursions, usually including two dives. It is important to book in advance due to the site's popularity and to ensure you meet the required advanced diver certification. There are no specific permits or fees mentioned for divers beyond the trip cost.

Safety & environment

Diving the SS Yongala, a site often characterized by strong currents and depths up to 33 meters, requires advanced diving skills and strict adherence to safety protocols. Divers must be proficient in buoyancy control and comfortable in challenging conditions. The nearest recompression chamber is likely located in Townsville. Evacuation in a medical emergency would involve boat transport back to Alva Beach or Ayr, followed by road transport to a hospital or medical facility. Divers are strongly advised to have comprehensive dive insurance that covers emergency medical treatment and evacuation. Rules include strictly no penetration of the wreck, which is a protected historical site and a war grave, and no touching of the delicate corals or marine life. Listen carefully to your dive guide's briefing, especially regarding current conditions and the specific dive plan for the day.

Who it suits — and who it doesn't

FAQ

Ayr FAQ

Liveaboards diving Ayr

These liveaboards may visit Ayr on selected itineraries — the exact dive sites depend on departure, weather and conditions.

Spoilsport

Australia

28 guests30 m

$405/day

Odyssey Liveaboard

Australia

20 guests24 m

$392/day