West Marine guide says choose anchors by bottom, not boat size

Bottom type beats boat length

The fastest way to waste money on ground tackle is to buy by reputation or by hull length and call it good. West Marine’s updated anchor guide, credited to Tom Burden and last updated on April 22, 2026, pushes a more useful idea: choose the anchor that fits the bottom you actually drop into, then layer in rode, scope, and cruising style from there.

That matters because anchoring is not just a gear choice, it is a sleep choice and a safety choice. If the anchor does not bite, the boat does not rest, and a windy night can turn into a dragging problem fast. Burden’s background as a lifelong boater, boatbuilder, sailing instructor, champion racing sailor, and former technical editor gives the guide a practical tone, not a showroom one. West Marine also notes that he competed in the 2016 Singlehanded Transpac race from San Francisco to Kauai aboard his Cal 40, which helps explain why the piece reads like advice from someone who has had to trust his own ground tackle offshore.

Match the anchor to the seabed

The guide’s core lesson is simple: sand, mud, grass, and rock all reward different shapes. That is why the same anchor can look brilliant in one harbor and disappointing in another. A heavy-looking anchor is not automatically better if its shape is wrong for the bottom.

The family names matter, but only in context. Fluke anchors, plow anchors, scoop anchors, and claw anchors each bring a different compromise between bite, reset behavior, and ease of handling. Soft mud often rewards a different style than a mixed bottom or a weed-covered anchorage, and that is where many DIY sailors get caught out. If your cruising grounds are mostly one type of bottom, you can lean into that. If they vary, carrying more than one anchor type starts to make sense very quickly.

Why soft mud changes the whole calculation

Soft mud is where reputation can fail you. Practical Sailor’s December 8, 2025 coverage of anchoring in squishy bottoms found that Fortress tests in Chesapeake mud exposed weaknesses in modern roll-bar designs, while Danforth-style flukes performed best in soft seabeds. That result is exactly why bottom type can override general brand confidence.

In practical terms, that means your “best” anchor for a sandbar lunch stop may not be your best anchor for a Chesapeake-style mud flat. It also explains why experienced cruisers often keep a second anchor aboard for specialized conditions. One anchor can be your everyday tool, while another is your answer for the muddy, weed-choked, or awkward spot you did not plan on but still need to ride out.

Sizing still matters, but only after the match is right

Burden does not ignore size, and neither should you. An anchor that is too small may set poorly or fail in a blow, which is the kind of mistake that gets expensive and stressful fast. But the bigger mistake is assuming that oversizing solves everything. A larger anchor can be awkward to handle, awkward to store, and more annoying than useful on a small boat or a trailer sailor’s deck.

That is why the guide treats size as one part of the decision, not the whole decision. The right question is not just how big is the boat, but how heavy is it, where does it anchor, and how often does it need to stay put overnight. A short-handed cruiser sleeping aboard in exposed water has different needs than a day sailor dropping hook in protected sand for an hour.

Build your choice around how you actually cruise

A smart anchor setup starts with the real use case, not the catalog description.

For mud, favor a shape with proven holding in soft seabeds. For sand, look for a design that sets cleanly and predictably. For weed or grass, focus on how well the anchor can cut through the top layer and reach something firm. For rock, know that the discussion changes again because holding often depends on finding a snag or a secure set in irregular terrain.

Then layer in how you cruise:

• If you mostly do short-handed overnighting, prioritize reliable setting and strong holding in your common bottom type.
• If you bounce between bays, coves, and tidal harbors, consider carrying a second anchor that performs better in a different bottom.
• If you want storm backup, think beyond the hook itself and plan how you will veer chain, reset, or deploy a second anchor if the first one starts to move.

That is the heart of the guide’s appeal. It gives you a decision path instead of a brand loyalty contest.

Rode and scope are part of the system

Anchor choice does not live alone. The rode and the scope help determine whether the setup can develop the holding power the anchor is designed to deliver. Waterway Guide’s common rule of thumb is 5:1 for all-chain rode, 7:1 for half-chain and half-rope, and 10:1 for all-rope in mild conditions. Those numbers matter because a great anchor can still underperform if the scope is stingy.

The other half of the safety picture is what you do after the hook is down. Under 33 CFR 164.19, the master or person in charge of an anchored vessel must maintain a proper anchor watch, use procedures to detect a dragging anchor, and be ready to veer chain, let go a second anchor, or get underway if weather, tide, or current make dragging likely. In other words, anchoring is not a one-time drop. It is an active watch condition.

Standards and common sense are pointing the same way

ABYC H-40 covers anchoring, mooring, and strong points, and ABYC recommends compliance for boats and associated equipment manufactured after July 31, 2009. The standard has been treated as a consensus guide for the marine community and is reviewed at least every five years. That gives the whole discussion a useful frame: anchoring is not just a preference issue, it is a safety issue built into how boats and gear are expected to work.

Seen together, the standards, the scope guidance, and the field testing all point in the same direction. The anchor is only one piece of the system. Bottom type, rode choice, scope, load, and weather all shape whether the boat sits quietly or starts to wander.

The takeaway for DIY sailors

West Marine’s updated guide lands in the right place for trailer sailors, coastal cruisers, and liveaboards alike: do not buy the hook that sounds toughest, buy the one that fits your bottoms and your cruising style. A boat size chart can get you in the ballpark, but sand, mud, weed, and rock decide the final answer.

That is what makes the guide useful. It turns anchoring from a guessing game into a matching problem, and in the anchorage, that difference is the gap between a quiet night and a midnight alarm.