KN48 Knife


Our KN48 knife is an essential piece of safety equipment for scuba diving, sailing and many other water sports or rescue scenarios. This ultra compact knife features a 304 grade stainless steel, twin edged, heavy-duty blade complete with a chisel tip for additional safety, when stowing the knife in its sheath. The included ‘hard case’ knife sheath incorporates a webbing belt clip on the rear, for specialist rescue attachment or for attaching to any nylon harness webbing. Also includes a sp...

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Delivery, Returns & Instore Collection

When will I receive my order?

International Delivery Times

Monday – Friday 3 – 5 Working Days

UK Mainland Delivery Times

Monday – Friday before 2pm Next Working Day
Monday – Friday after 2pm 2 Working Days
Saturday & Sunday 2 Working Days

UK Extended Areas Delivery Times

Monday – Sunday 3 – 5 Working Days

Please note delivery times may be extended during busy periods.

EU Areas

Please note that due to changes by HMRC, orders being shipped to EU countries will not be shipped on the same day as they are invoiced. EU Orders will now be shipped on the next working day. This only applies to E.U. orders. Domestic and Worldwide shipments remain the same.

Collect In Store?

When you go to the online checkout, you can opt to collect your items in store. We'll let you know when your order is ready for you to collect. Your order will normally be ready to collect the next working day.

Returns, refunds or exchanges?

You can return any item within 28 days of receipt for a refund, provided the item is unused, in its original packaging and in 'as new' condition.

Items will be refunded in full (less postage) if received within 28 days from the date of despatch.


We aim to deal with all returns and exchanges on the day they arrive, however please allow longer during peak periods.

You can return the item(s) by dropping them off in store or by returning the item(s) by post. We do not insist on a specific courier service for the return, so please use the most economical or appropriate method for returning the item(s).

Northern Diver (Int) Ltd
Appley Lane North
Appley Bridge

If an item becomes faulty after a period of time then please contact customer services (01257 254 444 or prior to returning the item. We will either repair or replace the item at our discretion.

Tell Us What You Think

Customer Reviews

4.4 out of 5 Stars (5 reviews)

Write a Review

Great Knife, Good Quality and Easy to Use

By Chuckoit on 04 Jun. 2011

I have the yellow version of this knife which makes it very obvious to my buddy and others. The knife is great quality and has survived multiple dives. I would suggest checking that the lock is fully engaged as if not it can slip out but other than that I cannot fault it.

Great Back Up Dive Knife

By Neil Clemen on 04 Mar. 2015

Used this knife as a back up to my macho diver - shark killer. Fitted to the inflator hose of my BCD it is easy to locate due to it's bright colour and is easily removed from it's sheath in a one handed operation. Also, the blade remains locked in position even after many stride entries from hard boats. After 5 months of use both in the North and Red Sea, the blade remains spotless, not the slightest sign of rust spots, which is more than can be said for the big shark killer. As a back up dive knife, this is one I can recommend.

Great Buy and Great Value BCD Knife

By P0SHBOY on 17 Mar. 2016

Bought the black one and was impressed with the practicality of it. I then also bought the green hi visibility one. I have one attached to my gauges and the other on my BCD this way I have one on either side of my body for access. These BCD knives are not to be used for hammering or I'd imagine prying things open but for a summer diver like myself who flys to the hotter climates to dive these dive knives are great. Highly recommend for the price, great value and also cheap to replace if lost. It's a win win win

Great Little Dive Knife

By Anonymous Customer on 03 Dec. 2013

I received this and didn't expect much but actually, it is a great dive knife. The knife itself seems very sturdy and the release button on the knife allows easy removal and replacement.

KN48 Dive Knife

By Derek Farr on 26 May. 2017

A handy knife - can be attached to a hose for easy use. Also lanyard can save it form been lost while diving if required cut lanyard - I have mine fixed close to a gage for ease of access.


Trade Customers

Northern Diver offers trade accounts to commercial organisations and to those who work in or around water. Please click here to register your details and find out if you qualify. Once your trade account has been confirmed you can view all trade prices and shop easily online when logged into your account. Please note when you are not logged in to your trade account retail prices are shown. If you have any queries please do not hesitate to contact us. Tel: +44 (0) 1257 25 44 44.