Diving the Peltastis Wreck: A Detailed Guide for Underwater Explorers

The Adriatic Sea, with its rich maritime history, is home to numerous shipwrecks that tell tales of ancient trade, naval battles, and maritime disasters. Among these underwater treasures is the Peltastis wreck, located near the Croatian island of Krk. This well-preserved shipwreck offers a fascinating glimpse into maritime history, attracting archaeologists, divers, and historians alike.

In this article we explore the history of the Peltastis wreck, its discovery, archaeological significance, and what makes it a unique underwater site. Additionally, we will discuss diving conditions, preservation efforts, and the broader context of shipwrecks in the Adriatic.

Historical Background of the Peltastis

The Ship’s Origins

The Peltastis was a steel-hulled cargo ship built in the early 20th century. While its exact construction date remains uncertain, it is believed to have been launched sometime between 1910 and 1930. The vessel was likely used for transporting goods across the Adriatic and Mediterranean seas, a common route for merchant ships of that era.

The Final Voyage and Sinking

The circumstances surrounding the sinking of the Peltastis are not entirely clear, but historical records and local accounts suggest that the ship met its fate during World War II. The Adriatic was a hotspot for naval activity during the war, with numerous ships falling victim to mines, torpedoes, or aerial bombardments.

One theory posits that the Peltastis was struck by a mine, a frequent hazard in the Adriatic during wartime. Another possibility is that it was scuttled intentionally to avoid capture or to create an underwater obstacle. Regardless of the cause, the ship now rests at the bottom of the sea, serving as an artificial reef and a historical monument.

Discovery of the Wreck

Initial Findings

The Peltastis wreck was discovered by local fishermen and divers in the late 20^th century. Its exact location was not widely publicized initially to prevent looting and unauthorized salvage operations. Over time, however, the site became known among diving enthusiasts and marine archaeologists.

Archaeological Exploration

The first official archaeological surveys of the wreck were conducted in the early 2000s by Croatian maritime archaeologists. Using sonar scanning and underwater photography, researchers mapped the wreck and documented its condition. The findings confirmed that the ship was largely intact, lying on its starboard side at a depth of approximately 30 to 40 meters (98 to 131 feet).

Diving the Peltastis Wreck

1. Location and Depth

• GPS Coordinates: Approximately 45°06’N, 14°32’E (exact location often kept discreet to prevent unauthorized dives).
  
• Depth Range:
  • Shallowest point (deck): ~28 meters (92 ft)
    
  • Deepest point (seabed near the stern): ~40 meters (131 ft)
    
• Bottom Composition: Sandy and rocky seabed with occasional patches of seagrass.
  

Due to its depth, the Peltastis is classified as an advanced-level dive, requiring Deep Diver certification or equivalent experience.

2. Visibility and Water Temperature

• Visibility: Typically 10–20 meters (33–66 ft), with the best conditions in summer and early autumn. Winter months may see visibility drop to 5–10 meters due to plankton blooms.
  
• Water Temperature:
  • Summer (June–September): 20–26°C (68–79°F) – wetsuit (5–7mm) or semi-dry suit recommended.
    
  • Winter (November–March): 12–15°C (54–59°F) – dry suit strongly advised.
    

3. Currents and Dive Difficulty

• Currents: Generally mild to moderate, but unpredictable surges can occur, especially near the wreck’s openings.
  
• Difficulty Level:
  • Intermediate-Advanced (due to depth and potential currents).
    
  • Not recommended for beginners due to decompression risks.
    

4. Descent and Entry Points

Most dives start from a boat mooring directly above the wreck. A shot line is often used for safe descent, especially in low visibility.

Descent:

• Follow the anchor line to avoid disorientation.
  
• First stop at ~15 meters (50 ft) for a quick team check.
  
• Proceed slowly to the wreck at ~30 meters (98 ft).
  

5. Navigating the Wreck

The Peltastis lies on its starboard side, allowing divers to explore:

The Bow Section

• Notable Features:
  • Anchor chain still visible, partially buried in the sand.
    
  • Hull plates covered in sponges and soft corals.
    
• Marine Life: Often home to conger eels and scorpionfish.
  

The Cargo Holds

• Partially collapsed, allowing limited penetration (only for trained wreck divers).
  
• Artifacts: Occasionally, ceramic shards or metal fragments can be seen.
  

The Engine Room

• Steam machinery is still recognizable, though heavily encrusted.
  
• Caution: Sharp edges and potential silt-out risk if disturbed.
  

The Stern and Propeller

• The propeller is partially buried, but one blade is usually visible.
  
• Marine Life Hotspot: Groupers, moray eels, and octopuses frequent this area.
  

6. Ascent and Safety Stops

• Maximum Bottom Time: ~20–25 minutes (due to depth).
  
• Mandatory Safety Stop: 3 minutes at 5 meters (16 ft) (longer if close to no-decompression limits).
• Exit: Ascend via the mooring line to avoid drift.
  

Marine Life at the Peltastis Wreck

The wreck acts as an artificial reef, attracting a variety of Adriatic species:

Common Fish Species

• Groupers (Epinephelus marginatus) – Often seen near the propeller.
  
• Moray Eels (Muraena helena) – Hide in crevices.
  
• Scorpionfish (Scorpaena scrofa) – Camouflaged on the wreck.
  
• Damselfish (Chromis chromis) – School around the structure.
  

Invertebrates and Coral Growth

• Sponges (Axinella polypoides) – Cover large sections of the hull.
  
• Soft Corals (Alcyonacea) – Add color to the metal surfaces.
  
• Octopuses (Octopus vulgaris) – Frequently spotted in small holes.
  

Seasonal Visitors

• Summer: More pelagic species like barracudas and amberjacks.
  
• Winter: Larger conger eels become more active.
  

Safety Considerations and Risks

1. Depth-Related Hazards

• Nitrogen Narcosis: Likely at 30+ meters—stay calm and ascend slightly if symptoms appear.
  
• Decompression Sickness (DCS):
  • Strictly monitor no-deco limits (use a dive computer).
    
  • Consider a nitrox mix (32%) to extend bottom time safely.
    

2. Wreck-Specific Risks

• Entanglement: Fishing nets and lines sometimes snag on the wreck.
  
• Silt-Outs: Avoid excessive finning near the cargo holds.
  
• Limited Visibility Inside: Penetration dives require proper training and a guideline reel.
  

3. Emergency Procedures

• Lost Buddy: Agree on a pre-dive separation plan (e.g., return to the anchor line).
  
• Equipment Failure: Signal the dive leader and make a controlled ascent.
  

Booking and Costs

• Price Range: ~€70–€100 per dive (includes tank, weights, guide).
  
• Requirements:
  • Advanced Open Water certification (or equivalent).
    
  • Proof of deep diving experience (some operators require a check dive).
    

When to Go

• Best Season: from June to October (calm seas, warm water).
  
• Avoid: Winter months (rough conditions, colder temps).
  
  

Is the Peltastis Worth Diving?

Absolutely—if you’re an experienced diver. The wreck offers:

• A well-preserved historical artifact.
• Thrilling deep-wreck exploration.
• Vibrant marine life encounters.

However, due to its depth and potential hazards, proper training and preparation are essential. For those ready for the challenge, the Peltastis wreck is one of the Adriatic’s most rewarding dives.

Final Tips for Divers

1. Dive with a guide (local knowledge is invaluable).
2. Use a dive computer (track depth and no-deco time).
3. Bring a torch (even in daylight, it helps see into crevices).
4. Respect the wreck (no artifact removal).

You can read more about scuba diving on Krk HERE, and If you need help organising your activities or booking the best tours to explore the island and it’s surrounding, feel free to contact us. If you need a place to stay, check out our selection of accommodation on the island of Krk.