Fortress Aluminium Anchor Asst sizes - Viking Marine
Fortress Aluminium Anchor Asst sizes - Viking Marine
Fortress Aluminium Anchor Asst sizes - Viking Marine
Fortress Aluminium Anchors - The Worlds Best Anchor

Fortress Aluminium Anchors - The Worlds Best Anchor


Regular price Sale price €339.50
Tax included. Shipping calculated at checkout.



For over three decades, the much lighter Fortress® has out-performed substantially heavier steel anchors
in holding power tests conducted around the world.

In the US Navy tests, not only did the Fortress® anchors out-perform heavier steel anchors, they were also
able to withstand pull loads that averaged over 200x their own weight ... and without incurring serious
damage, which was noted in the test report summary:
“The fact that Fortress® anchors incurred no significant structural damage at such high holding ratios suggests that the anchors have been extensively engineered from both the hydrodynamic and structural

Fortress® anchors are constructed using a high-tensile, corrosion-resistant, aluminum magnesium alloy that is precision- machined into
interlocking components with no welds to weaken the metal. This results in a lighter, easy to handle anchor with superior holding power.
They are precision-machined for sharpness and quick penetration into common sea bottoms, which insures faster setting performance.

Fortress® anchors offer a Lifetime Parts Replacement Warranty. In the unlikely event of damaging an anchor part, Fortress® will replace the
damaged part for free, customers only pay for shipping and handling.


• Highest rating in over 20 independent tests worldwide

• Superior holding power at a fraction of the weight

• Easily assembles and disassembles for convenient storage

• Adjustable fluke angles for outstanding holding power: 32° for common bottoms, 45° for soft mud

• Models FX-37, FX-55, FX-85, and FX-125 certified by Det Norske Veritas (DNV) as “Super High Holding Power” anchors

• High-tech, rustproof aluminium alloy

• Lifetime Parts Replacement Warranty

• 90-day money back guarantee

• Tough anodized finish

• Type Approved by American Bureau of Shipping (ABS)

• Used by the U.S. Navy and U.S Coast Guard

 Fortress Anchor Guide


Boat Length ft 16'-27' 28'-32' 33'-38' 39'-45' 46'-51' 52'-58' 59'-68' 69'-150'
  m 5-8m 8-10m 10-12m 12-14m 14-15m 16-18m 18-21m 21-46m
Fortress Model   FX-7 FX-11 FX-16 FX-23 FX37 FX-55 FX-85 FX-125
   Weight  kg 1.8kg 3.2kg 4.5kg 6.8kg 9.5kg 14.4kg 21kg 31kg
 Holding Power  
Working Load kg 318 408 567 907 1,361 1,814 2,381 3,062
32° Hard Sanding Holding kg 1,270 1,633 2,268 3,629 5,443 7,258 9,526 12,247
45° Soft Mud Holding kg 381 490 680 1,089 1,633 2,177 2,858 3,674
32° Soft Mud Holding kg 191 245 340 544 816 1,089 1,429 1,837
"A" Shank Length in (mm) 24" (610) 27" (686) 31" (787) 36" (914) 40" (1,016) 46" (1,168) 51" (1,295) 56" (1,422)
"B" Fluke Length in (mm) 14" (356) 16" (406) 18" (457) 21" (533) 24" (610) 27" (686) 30" (762) 33" (838)
"C" Stock Length in (mm) 19" (483) 22" (559) 25" (635) 29" (737) 32" (813) 37" (940) 41" (1,041) 45" (1,143)
Set up Hardware  
Proof Coil Chain mm 6mm 6mm 8mm 8 or 10 10mm 12mm 12mm 16mm
Nylon Rope ** mm 10 10 12 16 18 22 25 32
Shackle Size 6mm 6mm 6mm 8mm 10mm 12mm 12mm 16mm 16mm



Please see below for a list of supplier sizing guides. If you have any issues, please don't hesitate to get in touch. We're here to help.

If we are missing a supplier, please send us an email and we'd be happy to source the correct sizing guide for you.

If you live in Dublin and would like faster delivery we offer same day delivery with Grab Same-Day. Orders placed before 1pm will be delivered to you in the evening time. Available Monday-Saturday for just €5 on orders over €75 or €12.50 on orders under €75.

We offer free shipping to all addresses in the Republic of Ireland and Northern Ireland for orders over €75.00 (large, bulky and heavy items like kayaks and boats are excluded from free shipping). Orders under €75.00 will be charged a flat rate of €7.50.

Orders are shipped with both DPD Couriers and An Post. 

All orders received before 12pm will be shipped the same day where possible (Monday-Friday). Orders after this time will be shipped the next day. Once the item is shipped the approximate delivery time is 1-2 days

You will receive a tracking number when your items are sent. This tracking will show updates once your order has been collected by our couriers. 

Delays may be experienced during certain times of the year and if this is the case we will contact you as soon as possible via email.

In delivering our best service, we are proud to offer same-day delivery on all orders in county Dublin for only €12.50. Orders for delivery to addresses in county Dublin will be offered this service for €12.50. If the order is placed before 1:00 pm, it will be dispatched that afternoon for delivery that evening (Monday-Friday). Orders placed after this time will be shipped the next day for delivery that day. this service also applies to orders placed at the weekend.

We reserve the right to change these conditions for exceptionally large or heavy items, items of a hazardous nature or if an item has run out of stock and has to be specially orderedWe will keep you posted of any changes to the best of our ability.

We offer shipping to all addresses in the United Kingdom for a flat rate of €24.95. We may not be able to ship large, bulky or heavy items. Please call for such items. Please note customs charges may apply. 

International Shipping Charges 

EU Near 

Order Value  Shipping Charge
€1.00 - €99.99 €12.95
€100 - €299.99 €14.95
€300 and up Free

 EU Mid

Order Value  Shipping Charge
€1.00 - €99.99 €14.95
€100 - €199.99 €19.95
€200 - €449.99 €24.95
€450 and up Free

 EU Far

Order Value  Shipping Charge
€1.00 - €199.99 €35.00
€200 - €499.99 €40.00
€500 and up Free
Terms & Conditions - Please note that any items of exceptional size (volume, weight, length) may require a surcharge. In this event we will contact you in advance for approval. 
Certain items of extraordinary nature (Paint, Oils, Epoxy etc) may not be possible to ship depending on your location. In the even of an order being unsuitable for shipping we will refund your order immediately and contact you to confirm cancellation of your order.
We are unable to ship any liquids, paints, oils or hazardous goods internationally. 

We reserve the right to change these conditions for exceptionally large or heavy items or items of a hazardous nature. We will keep you posted of any changes to the best of our ability.

Inclusion of any product on our website is not a guarantee of it being in stock at the time of ordering. We stock one of the most comprehensive ranges of sailing equipment in the country. However situations beyond our control may occasionally result in an item(s) being temporarily unavailable.

  • Items discontinued by manufacturers or that are no longer available: we aim to remove from our website as quickly as possible, but remember, we are only human after all.
  • If we are unable to supply any item(s) within 7 days, you will be contacted by telephone or email to offer alternatives or cancel your order. Available to order items, marked to follow will be sent automatically when they become available. We do NOT make additional charges for this service.
  • In any case, we aim to deliver goods within a maximum time frame of no more than 10 days from receipt of order. If we are unable to do this, you will be contacted to make arrangements for any necessary refund to be issued. 

We want you to be 100% satisfied with any online order placed with us. Therefore if you wish to return an item for whatever reason you may contact us by email at to organise a return. 

All returns must be organised within 30 days of receiving your order. Refunds are available within the first 14 days after receiving your order. After this period we can offer an exchange or store credit. 

Goods can be returned for a full refund plus any shipping paid at the time of purchase if they are faulty or if the wrong item has been dispatched.

Items must be unused and still have their original packaging and labelling attached.

Nothing in these conditions affects your statutory rights as a consumer.

The PayPal account or card used originally for the purchase will be credited with the original purchase amount 

If you are looking to exchange the goods for an alternative product or size, you will be liable for the extra shipping costs from our end.

Any footwear returned to us must be in its original condition, including boxes and footbeds.

Any items that we deem unhygienic will not be processed so please clean faulty goods if returning them.

Please note that if items are returned you should ask for proof of postage from your post office as we reserve the right to refuse a refund if an item is lost whilst being returned. Any item bought online can also be returned in store within the terms and conditions of sale, just remember to bring along your receipt.

Special Orders
If you have changed your mind on a non regular stock item that was ordered specially this can be returned for store credit only.

Returns Address

Viking Marine,
The Pavilion,
Marine Road,
Dun Laoghaire,
Co. Dublin,
Republic of Ireland.

Phone: +00 353 (1) 2806654