Mantus anchors

Mantus Anchors for Boats and Sailboats

Start with the shape that fits your bow: M1 for the classic roll-bar design and widest size range, or M2 for a cleaner fit without a roll bar.

Ships in 1–5 business days30-day returnsAdvice from real cruisers
Compare M1 & M2Shop all sizes
Mantus M2 Performance stainless steel anchor
Choose your anchor

M1 or M2?

Both are built to set fast. The real choice is how the anchor fits your bow and where you anchor.

With roll bar

M1 Performance

The classic choice, with an edge in very soft silt and sizes all the way to 220 lb.

Very-soft-silt edge8–220 lb Shop M1 Mantus M1 Performance anchor with roll bar Without roll bar

M2 Performance

A cleaner fit for tight bow hardware, with less space for mud and weed to pack around a roll bar.

Cleaner bow fit8–175 lb Shop M2 Mantus M2 Performance anchor without a roll bar
Then choose the finish Pick the exact weight on the product page.
Galvanized The best-value working finish Stainless The polished upgrade Shop all sizes
Now choose a starting weight

Match both boat length and displacement

These are Mantus starting points for an M1 working anchor or M2 cruising anchor. Pick the larger size if your boat falls between rows.

Move up for more exposure Heavy displacement, high windage, strong current, poor bottoms, and frequent overnight anchoring need more margin.
Check the whole bow setup Confirm roller clearance, windlass capacity, chain size, and locker space before choosing a larger anchor.
Use the storm row when needed Every anchor page carries Mantus day, working or cruising, and storm recommendations for that exact weight.
Product links below open the best-value galvanized finish. Change model or finish ↑
Boat lengthMax displacementAnchorShop M1Shop M2
20–25 ftsmall cruisers
Under 5,000 lbloaded displacement
17 lb
M1 17 lb M2 17 lb
25–30 ftcoastal cruisers
Under 11,000 lbloaded displacement
25 lb
M1 25 lb M2 25 lb
30–35 ftcruising sail and powerboats
Under 15,000 lbloaded displacement
35 lb
M1 35 lb M2 35 lb
35–39 ftmid-size cruisers
Under 20,000 lbloaded displacement
45 lb
M1 45 lb M2 45 lb
39–43 ftheavier coastal cruisers
Under 30,000 lbloaded displacement
55 lb
M1 55 lb M2 55 lb
43–45 ftheavy monohulls and smaller cats
Under 40,000 lbloaded displacement
65 lb
M1 65 lb M2 65 lb
45–50 ftoffshore cruisers
Under 50,000 lbloaded displacement
85 lb
M1 85 lb M2 85 lb
50–60 ftlarger cruisers and cats
Under 60,000 lbloaded displacement
105 lb
M1 105 lb M2 105 lb
60–70 ftlarge offshore boats
Under 70,000 lbloaded displacement
125 lb
M1 125 lb M2 125 lb

Under 20 ft? Start with the small-boat range or use the compact kit for a tender.

13 lb galvanized M1 13 lb M2 Dinghy anchor kit

M1 rows use Mantus' Working category (under 40 knots); M2 rows use the Cruising category (under 50 knots). Use the exact product page table for day or storm sizing.

Current M1 table ↗ Current M2 table ↗

Explore related categories

Bridles & Snubbers Anchor Mounting All Anchoring Hardware

Mantus anchor FAQ

How do I pick the right size?

Mantus publishes sizing by boat length and displacement for day (winds under 30 kt), cruising (under 50 kt), and storm use, assuming poor holding ground. The table is on every anchor page. Between sizes? Size up.

Galvanized or stainless?

Within each line the geometry is identical. Hot-dip galvanized is the value pick and shrugs off hard use; polished stainless adds corrosion resistance and bow appeal. Both carry the manufacturer lifetime warranty.

Will it fit my bow roller?

The roll-bar-free M2 Performance is built for bow rollers, pulpits, and bowsprits; the classic M1 Performance uses a roll bar, so check clearance above the roller. Both break down for storage. Unsure? Send us a photo of your bow and we'll check the fit.