Casco NN - Mar del Plata

Casco NN, right off Mar del Plata, is one of those sites we always make time for. It’s a shallow dive, just five metres, but don’t let that fool you into thinking it's simple. This isn’t some artificial reef, it’s a genuine piece of history, and you can feel it. The wreck itself is pretty broken up, scattered across the seabed, which means you’re not just swimming over a single hull. Instead, you're navigating through a maze of twisted metal plates, exposed ribs, and scattered debris. We love how the light plays on the fragmented pieces, especially on a sunny day. It filters through the surface, illuminating schools of silversides that flicker around the metal, darting in and out of every crevice. You’ll spot crabs scuttling over the rust, hiding in nooks and crannies. Honestly, it feels like an archaeological dig, an open-air museum where you’re the explorer. We'd suggest going in the morning; the water tends to be calmer, and you get better visibility before any afternoon chop picks up. While it’s technically a wreck, the shallow depth and dispersed nature make it a great spot for newer divers looking for something a bit more interesting than just a reef, or for experienced eyes who appreciate the small details.

Location
Mar del Plata, Argentina, South America
Coordinates
-34.250942, -58.707172
Type
wreck
Maximum Depth
5m

Best Time to Dive in Mar del Plata

The warmest water temperatures in Mar del Plata occur in January, averaging 26.7°C. The coolest conditions are in July at 11.0°C.

Monthly Water Temperatures

  • January: 26.7°C
  • February: 25.8°C
  • March: 24.1°C
  • April: 20.3°C
  • May: 16.3°C
  • June: 13.0°C
  • July: 11.0°C
  • August: 12.2°C
  • September: 14.8°C
  • October: 18.2°C
  • November: 22.3°C
  • December: 24.8°C

Nearby Dive Sites in Mar del Plata

Nearest Dive Centres to Casco NN

Marine Life in Mar del Plata

Home to 33 recorded species including 19 reef fish, 7 sharks & rays, 3 whales & dolphins, 2 other, 1 crabs & lobsters, 1 sea snails & nudibranchs.

Notable Species

Recommended Packing List for Casco NN

Based on average water temperature of 19.1°C, currents 3 cm/s.

  • Wetsuit (3-5mm) - comfortable for 19°C water
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories