Anchorage and mooring field etiquette
Choosing a position that doesn't intrude on existing boats, calculating swing radius before you drop the hook, wind-shift behavior by rode type, noise standards in an anchored fleet, dinghy dock access, holding tank rules in protected waters, and quiet departures at dawn.
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The steps
1 Choosing where to anchor
- Motor through the anchorage before dropping the hook. Note which direction boats are pointing (wind or current), how much scope they're using, and whether there's room to swing without fouling another boat. This takes five minutes and prevents most anchoring conflicts.
- Anchor at the edge, not the center. Late arrivals should add to the perimeter. Anchoring in the middle of an established anchorage means your swing radius overlaps multiple existing boats, a problem if the wind shifts overnight.
- Respect the swinging room of boats already there. Every anchored boat has a prior claim to its swinging circle. You anchor where your circle doesn't overlap theirs, not where it overlaps but you think you'll be fine.
- Match your tackle to the bottom type. Anchor selection and scope should match the bottom: sand, mud, rock, grass. Anchoring on the wrong bottom with the wrong anchor and calling it set creates a hazard for you and everyone in your swing radius.
- Motor through before dropping. Note direction boats point, scope used, and swing clearance. 5 minutes prevents most conflicts.
- Anchor at the perimeter, not the center. Your swing circle must not overlap existing boats' circles.
- Prior claim: every anchored boat owns its swing circle. You anchor where yours doesn't overlap, not where it overlaps but seems fine.
- Match tackle to bottom type: sand, mud, rock, grass. Wrong anchor on wrong bottom = hazard for you and everyone in radius.
2 Swinging room and wind shifts
- Calculate your swing radius, not just your current position. At 5:1 scope in 30 feet of water, your rode is 150 feet plus boat length. Everything within that distance from your anchor point is within your potential swing arc on all compass headings.
- Wind shifts overnight are the most common cause of dragging incidents. A boat that holds perfectly with wind from the south can drag when the wind clocks to the north and the load comes from a different angle. Set in the direction of the prevailing forecast wind, not just the current wind.
- Boats on chain swing differently than boats on rope. A boat on all-chain rode swings tighter than one on rope. If you're neighboring a boat on a different rode type, their behavior under wind shifts will differ from yours. Account for this when choosing your position.
- If you drag, you move, not the boat you're closing on. If your anchor drags and you're approaching another boat, the responsibility for resolving it is yours. Start the engine, reset the anchor, and leave room for the other boat regardless of who anchored first.
- Scope 5:1 to 7:1, measured from the bow; 7:1 is the safe default, more in wind. Swing radius = scope + boat length on all headings.
- Set in the direction of the forecast wind, not current wind. Overnight shifts are the most common drag cause.
- Chain swings tighter than rope. Mixed rode types in the anchorage: account for different swing arcs.
- If you drag, you move. Start engine, reset, leave room. Your problem regardless of who anchored first.
3 Noise at anchor
- Sound carries over water farther than you think. A conversation on deck at normal volume is audible on neighboring boats in a calm anchorage. Music from a speaker at outdoor volume carries a long way on a quiet evening.
- Generator runtime in anchorages is a serious consideration. A generator running at 11 PM in a quiet cove is heard and felt by every nearby boat. If you need AC overnight, either limit the generator to a window before quiet hours or anchor far enough from others that it doesn't carry.
- Where quiet hours aren't posted, 10 PM is the generally accepted courtesy standard. Many popular anchorages in parks and protected areas post explicit quiet hours. Where they're not posted, 10 PM is what experienced anchoring communities observe.
- Sound carries further over water than you expect. Normal conversation audible on neighboring boats in a calm anchorage.
- Generator at 11 PM: heard and felt by every nearby boat. Limit to before quiet hours or anchor far enough out.
- 10 PM is the standard where quiet hours aren't posted. Know the posted hours before anchoring in parks and protected areas.
4 Dinghy dock etiquette
- Don't leave your dinghy at a public dinghy dock all day. Dinghy docks are for short-term tie-up, a few hours at most. Tying before breakfast and returning at dinner takes a space a dozen other boats could have used during the day. Tie at the end of the float rather than broadside to allow more boats to fit.
- Don't lock your dinghy to the dock. Most dinghy docks prohibit it; locking permanently reserves space during high-demand periods. If you're concerned about theft, anchor far enough out to make the dinghy a harder target.
- Stow oars when tied up. Oars extending past the dinghy's sides take space and create hazards for other dinghies alongside. Stow them inside or along the centerline.
- Short-term only: a few hours. Tie at the end of the float, not broadside.
- No locking to the dock. Theft concern: anchor farther out to make the dinghy a harder target.
- Oars inside or along the centerline when tied up.
5 Holding tanks in protected waters
- No-discharge zones prohibit all overboard sewage discharge. Many popular anchorages (national parks, marine protected areas, and state-designated no-discharge zones) prohibit overboard discharge regardless of treatment level. A Type I or II MSD does not make discharge legal in a no-discharge zone. Use the holding tank.
- Know the rules for the specific anchorage before you arrive. The USCG, state agencies, and National Park Service all administer different water bodies with different rules. The USCG Clean Vessel Act maps no-discharge zones. Check them before anchoring in unfamiliar protected waters.
- The Y-valve must be closed in no-discharge zones. Some states require Y-valves in no-discharge waters to be secured in the closed-to-overboard position: zip-tied, locked, or physically prevented from being opened. Know what your state requires before you enter the zone.
- NDZ: all overboard discharge prohibited regardless of MSD type. Type I or II MSD is not a workaround in a no-discharge zone.
- Check USCG Clean Vessel Act NDZ maps before anchoring in unfamiliar protected waters.
- Y-valve: some states require it secured closed (zip-tied or locked) in NDZ waters. Know your state requirement before entering the zone.
- NDZ and no-discharge rules vary by managing agency: state, NPS, and Army Corps waters each designate no-discharge zones separately. See the Waterway Rules and Jurisdiction guide for the full breakdown by water type.
6 Departing without waking the anchorage
- Early departures are welcome. Just be quiet. Many cruisers leave at first light. Other boats understand this. What they don't appreciate is shouting commands, running gear at high speed, or running the engine at high RPM in a confined anchorage at 5 AM.
- Raise the anchor slowly in a crowded anchorage. A power windlass at full speed while chain crashes into the locker wakes people on nearby boats. Slow down the retrieval rate and stack chain neatly: same amount of time, fraction of the noise.
- Idle speed through the anchored fleet. The wake from a boat running at 8 knots through a tight anchorage causes boats to roll, items to fall, and people to wake up. This is the departure equivalent of the boat ramp rule: you affect more people than you realize.
- Early departures are fine. Quiet is the only requirement: no shouting, no high-RPM engine, no running gear at speed at 5 AM.
- Power windlass: slow retrieval rate, stack chain neatly. Chain crashing into the locker at full speed wakes everyone on nearby boats.
- Idle speed through the anchored fleet. 8 knots through a tight anchorage wakes people, rolls boats, drops items.
7 Official resources and regulations
Federal sources covering anchorage regulations, navigation rules, no-discharge zones, and chart data. Anchorage restrictions in national parks, marine protected areas, and state-designated no-discharge zones are enforced separately from general boating rules. Check each body of water before you drop the hook.
USCG Navigation Center: Navigation Rules (COLREGs)
The full text of the International and Inland Navigation Rules governing right-of-way, anchoring lights and shapes, and sound signals, the authoritative source for what Rule 30 requires of anchored vessels
NOAA Office of Coast Survey: Nautical Charts
Free downloadable nautical charts, the NOAA chart viewer, tide and current predictions, and anchorage depth data, the primary planning tool for unfamiliar anchorages
EPA: No-Discharge Zones by State
State-by-state list of designated no-discharge zones where all overboard sewage discharge is prohibited regardless of MSD type
33 CFR Subchapter E: Anchorage Regulations
Federal anchorage ground designations for major US harbors and waterways, including restricted anchorage areas, time limits, and permit requirements for extended stays in designated anchorages
Anchoring in national park waters, marine sanctuaries, or state-designated protected areas may require a permit or carry restrictions not reflected on standard nautical charts. Check with the managing agency for any anchorage inside a park or sanctuary boundary before setting the hook.
- USCG Navigation Rules / COLREGs (navcen.uscg.gov/navigation-rules-amalgamated): Full text of International and Inland Rules; Rule 30 covers lights and shapes required for anchored vessels
- NOAA Nautical Charts (nauticalcharts.noaa.gov): Free charts, NOAA chart viewer, tide and current predictions, anchorage depth data, primary planning tool for unfamiliar anchorages
- EPA No-Discharge Zones by State (epa.gov): State-by-state no-discharge zone designations; overboard discharge prohibited in NDZs regardless of MSD type
- 33 CFR Subchapter E (ecfr.gov): Federal anchorage ground designations, restricted areas, time limits, and permit requirements for major US harbors
- Park and sanctuary anchorages: NPS, NOAA sanctuaries, and state agencies may impose restrictions not shown on charts. Check managing agency before anchoring inside any protected area boundary.
These articles are provided for general informational purposes only and do not constitute professional, legal, safety, or emergency advice. Content reflects conditions at the time of publication and may be out of date, laws, regulations, facility rules, and equipment standards change. Always verify requirements with the governing authority for your jurisdiction, vessel class, and specific situation. goFrigg makes no representations about the completeness or accuracy of this content and is not responsible for outcomes resulting from actions taken based on these articles. In an emergency, contact emergency services immediately, do not rely solely on this content. Trailering, boating, and storage carry inherent risks. Consult qualified professionals before acting. See our Privacy & Terms for full disclaimers.
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