Skip to main content
—— Gear Review · Safety

Salvimar Freediving Buoy

~30L · PVC · Integrated dive flag · Carry bag included

The best all-around freediving buoy: large enough to stay visible and support a weighted training line, with every feature needed for open water practice.

8.9 / 10
—— Verdict
Recommended, best overall
Salvimar · Safety
—— Price (USD)
~$90
Affiliate link · disclosed below
—— What we like
  • + Integrated dive flag signals boats without needing a separate attachment
  • + 30L volume stays visible and doesn't pull under with weighted line
  • + Multiple D-ring attachment points for dive line and safety sausage
  • + Durable PVC construction, holds up to UV and salt water over seasons
  • + Carry bag included for transport
—— What to know
  • − Takes 3-4 minutes to fully inflate in the field
  • − Bulkier to pack than smaller alternatives
— Section 01

Overview

The Salvimar freediving buoy is a dependable default for open water training sessions. It does everything an open water buoy needs to do: stays visible, supports the line, flies the flag, and keeps its shape in conditions that degrade cheaper buoys. If you train several times a week and want a line reel built in, the Molchanovs Waypoint is the step up, and the 25L Omer buoy is the cheaper choice for lighter setups.

— Section 02

Why Size Matters

The 30L volume is the critical specification. A smaller buoy such as the 18L IST float technically works but pulls noticeably when a diver's body weight loads the line at depth. The Salvimar holds position. When your buddy surfaces after a 30m dive, the buoy is still floating upright with the flag visible, not half-submerged from the line tension.

— Section 03

The Integrated Flag

The integrated dive flag is Salvimar's practical advantage over bare float alternatives. The flag is always deployed without requiring a separate attachment, it's visible from a reasonable distance, and it doesn't require you to rig anything extra before getting in the water.

— Section 04

After 18 Months

PVC construction holds up well to UV and salt. On any buoy of this type, the parts that eventually fail are the inflation valve, the D-rings and the stitching on the carry bag, so rinse them in fresh water after each session and check the valve for slow leaks at the start of each season. With that routine, it is not a piece of gear that needs replacing on any typical schedule.

—— Frequently asked

Questions about
Salvimar Freediving Buoy.

01 Why do I need a buoy for open water freediving? +
A buoy serves two functions: it marks your position to boats on the surface, and it provides a fixed point for attaching your dive line. Without it, passing boat traffic doesn't know a diver is below, a genuine safety risk in any navigable water. Most jurisdictions legally require a dive flag in navigable waters.
02 What size buoy do I need? +
For a standard training setup with a 3-5 kg bottom weight and a 30-40m line, a 25-35L buoy is appropriate. Below 20L and the buoy pulls slightly under water when a diver is on the line; above 40L and it becomes unwieldy to transport. The Salvimar's 30L is the practical sweet spot.
03 How do I attach a dive line to the Salvimar buoy? +
The buoy has a D-ring at the base where the line attaches. Thread a carabiner or large snap clip through the D-ring and clip your line reel. The buoy is weighted upright by the line and floats flag-up, which is the correct orientation for signaling boats.
—— Sources

What this article is based on

  1. AIDA International, the world freediving federationAIDA International
  2. Freediving safetyDivers Alert Network (Alert Diver)
  3. Injuries and fatalities related to freediving: a case report and literature reviewCureus, 2022
  4. About AIDA: rules, disciplines and competition standardsAIDA International