Shotline Diving

Connecting You to the Depths of the Great Lakes

Proper Mooring

Shotline Diving – Great Lakes & Rivers

Mooring How-To (Wreck-Friendly)

Moorings protect wrecks from anchor damage, reduce disturbance to fragile structure, and provide a predictable descent/ascent line. Treat every buoy like shared infrastructure — because it is.

At a glance
Goal: no anchors on wrecks • Default: no tying into wreck • Rule: leave it better than you found it
Why moorings exist
🛟 Keep anchors off wrecks
Reduce impact, protect heritage.
What you get
🧭 Predictable descent line
Safer access + less searching.
The “don’t” list
🚫 No tying into wreck
No “upgrades” to the mooring.
Good form
✅ Simple tie-in
✅ Share space • ✅ Report damage

What Is a Mooring System?

A mooring system is a permanent anchor point with a floating buoy so vessels can secure without dropping anchors. Typical components:

Mooring “exploded view”
① Bottom anchor
Concrete block / engineered anchor set clear of the wreck.
→
② Riser / chain / rope
Durable, abrasion-resistant. Designed for load + wear.
→
③ Float(s)
Subsurface and/or surface buoy keeping line vertical and visible.
→
④ Pick-up loop / line
Where boats secure on arrival. Use your own lines.

Used correctly, moorings protect wrecks, reduce silt clouds from dragging anchors, and make boat traffic manageable on popular sites.

How to Use a Mooring (Surface → Descent → Departure)

Step 1
Approach calmly
⚓ Approach upwind/up-current where practical. Brief who hooks, who helms, who spots.
Step 2
Pick up clean
🪝 Use a boat hook. Don’t “catch” with hands at the rail. Avoid prop/line conflict.
Step 3
Tie with your lines
🧵 Secure using your own bow line(s). Do not re-knot, shorten, or “improve” the mooring.
Step 4
Descend/ascend on the line
🫧 Use the mooring for controlled descent/ascent. Avoid grabbing fragile structure for stability.
Step 5
Depart clean
🚤 Clear the line fully before powering ahead. If others are waiting, rotate — don’t linger.

Who’s Doing the Work?

Across the Great Lakes, wreck protection and mooring maintenance are handled by volunteer groups, non-profits, and agencies. Key players include:

Preserve Our Wrecks Kingston
Eastern Lake Ontario
Save Ontario Shipwrecks (SOS)
Ontario-wide
Niagara Divers Association
Niagara Region
Parks Canada – Fathom Five
Tobermory
Midwest Archaeological Survey Team (MAST)
U.S. Great Lakes
Cleveland Underwater Explorers (CLUE)
Ohio Waters

Additional Regional Partners

Mooring Etiquette & Local Practices

Moorings exist to protect wrecks and make life easier on the water. A few simple habits go a long way toward keeping sites safe, friendly, and open to everyone:

On the surface
  • Largest boat ties in first when rafting multiple boats on a mooring.
  • Idle speed in the mooring area — no wake, no buzz-by dives.
  • Use proper mooring lines from your boat to the buoy loop.
  • Leave room for others — don’t block the ball during surface intervals.
  • Keep it clear — no staging gear clipped to the mooring line.
  • Emergency ready — keep a skipper/engine ready to move if needed.
Below the surface
  • Never anchor on a wreck or run extra lines around structure.
  • Use the mooring line for descent/ascent — avoid grabbing fragile wreck parts.
  • No tying scooters or stage bottles to the mooring or wreck.
  • Watch your fins around silt, shells, and fragile timbers.
  • Leave things as you found them — no souvenirs, no moving artifacts for photos.
Supporting the programs
  • Offer donations or volunteer time to groups maintaining moorings you use.
  • Report damaged buoys, chafed lines, or missing hardware through local clubs/programs.
  • Share accurate site info (depth, hazards, access) rather than rumours or guesswork.

Challenges, Costs & Long-Term Care

What it takes
  • Anchors placed with minimal impact to bottom and wreck.
  • Hardware sized for load, corrosion, and year-round exposure.
  • Regular inspection and replacement of worn components.
  • Seasonal removal in ice-prone areas.
  • Coordination between divers, clubs, charters, and agencies.

Assume “your” mooring was installed by someone on their day off.

Benefits beyond diving
  • Protect cultural heritage by reducing anchor strikes and structural damage.
  • Improve safety through predictable access points.
  • Support education and tourism by making sites easier to visit and interpret.
  • Build community among clubs, operators, historians, and visitors.
If it looks wrong, say something
Note the site, date/time, and conditions. Describe what you saw (“outer shackle half worn through”, “buoy nearly submerged”). Report it to the local mooring group, charter operator, club, or site coordinator.

References & Links

This section will be populated from the Shotline Shipwreck References directory (CPT) and displayed in the standard yellow-row format. Duplicates and doc-links will be merged during the extraction + association pass.

96 references. Showing 46 per page.
Stay involved

Responsible access is preservation

Shotline tracks mooring programs, wreck access, and site conditions across the Great Lakes and St. Lawrence. If you care about long-term preservation, you’re already part of the solution.