Fortress Anchors & Parts

Fortress builds aluminum-alloy anchors that hold far above their weight class and come apart for compact storage, which is why they are popular as both primary and storm anchors. This collection covers Fortress anchors and the replacement parts, flukes, shanks, crowns, stocks, and clip sets, that keep an FX-series anchor in service. Choosing right comes down to sizing the anchor to your boat, setting the fluke angle for the bottom, and matching parts to your exact model.

Why aluminum anchors hold

Fortress anchors are precision aluminum, so they are light to handle and stow but use large, sharp flukes that dig deep and hold hard in sand and mud. The light weight means a Fortress often outholds a heavier steel anchor of similar size, which is why many boaters carry one as a storm or secondary anchor even with a different primary.

Size the anchor to your boat

Fortress sizes its FX-series anchors by boat length and weight, from small FX-7 models up through the large FX-125 for big vessels. Match the model to your boat length and displacement, and size up for a storm anchor or if you anchor in exposed water. The Fortress sizing chart is the right reference, since an undersized anchor drags. Always check your boat displacement rather than length alone when the vessel is heavily loaded with gear or fuel.

Set the fluke angle for the bottom

A key Fortress feature is the adjustable fluke angle. The standard 32-degree setting suits most bottoms like sand, while a 45-degree setting improves holding in soft mud where the flukes need to penetrate deeper. Set the angle for the bottom you anchor in most, and adjust when you change grounds. Carry a simple wrench aboard so you can change the setting quickly at anchor.

Parts keep an anchor in service

Because Fortress anchors assemble from components, a bent or lost part does not mean a new anchor. Match the fluke, shank, crown, stock, or clip set to your exact FX model, since parts are model specific. Keep a clip set aboard, as the small parts are the ones that go missing. Inspect the anchor after every heavy blow to catch wear before it leads to failure.

Stows flat

The disassembled Fortress lies flat, which makes it ideal to stow as a backup without taking locker space. Break it down, bag the parts, and you have serious holding power ready when you need it. Many owners keep the anchor in a dedicated deck bag so it can be reached without opening the main anchor locker.

Not sure which Fortress or part you need? Tell our crew your boat length and anchor model, and we will match the anchor size, fluke angle, and parts so you hold where you drop. Proper care and correct sizing give years of reliable service from a single Fortress anchor.