Nautilus

Nautilus builds the parts that keep the rest of your kit working: hoses, gauges, compasses, spools, valves and the small spares that fail at the worst possible moment. Oyster Diving stocks the range properly, from single-tank inflator hoses through to cave line, oxygen-service fittings and rescue kits. Our staff dive this equipment, and we can match a part to your regulator before you order it.

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What Nautilus actually makes

Nautilus is a spares and components brand rather than a headline-equipment one. You will not find wetsuits or BCDs here. What you get instead is the connective tissue of a dive kit: the hoses, gauges, compasses, valves, line and fittings that everything else hangs off, plus the consumables that quietly wear out. It is the range you come to when something has failed, or when you are assembling a configuration from parts rather than buying it off the peg.

What is in the range

Hoses

High pressure hoses run from short 15cm and 20cm lengths, for a button gauge or a transmitter sitting tight to the first stage, up through 56cm, 62cm and 80cm for console and clipped-off gauges. Low pressure inflator hoses cover 56cm, 65cm and 74cm for standard single-tank setups, with a 90cm option for taller backplate and wing rigs. Decanting hoses come at 1 m and 2 m for 300 bar work, with or without an INOX gauge.

Gauges and compasses

Submersible pressure gauges come with 52 mm and 63 mm faces in 0-300, 0-360 and 0-400 bar versions, with tempered glass, chrome or black dial options and dedicated oxygen variants. A slim 0-400 bar gauge with a Lexan lens and a 23 mm button gauge cover the minimal end, and there is a console pairing an SPG with a depth gauge. Compasses ship assembled on a bungee mount in 22 degree and 30 degree versions, including a TEC model with a grey ring, plus a bare casing if you are rebuilding your own.

Line, spools and markers

Braided PES caveline is stocked in 1.5 mm and 2 mm on roughly 200 m and 500 m spools, in natural and high-visibility yellow. Directional arrows come at 65 mm and 90 mm, and non-directional markers at 55 mm, both in red, white and yellow and sold in packs of ten. For deployment there are coldwater spools at 30 m and 40 m, a 15 m aluminium spool in fluorescent yellow, and DIRZone coldwater spools supplied with a stainless double ender.

Cylinders, gas handling and small parts

For cylinder work there are 300 bar top handle valves in M18x1.5 and M25x2, a DIN cylinder insert and a cylinder silencer. Gas handling is covered by oxygen-service SPGs, a green oxygen SPG hose so the service is obvious at a glance, a Divesoft professional flow meter with a DIN G5/8 fitting, and the SOS oxygen rescue kit, also sold complete with a steel 5 l cylinder. The sundries repay a look: two and three place hose holders in black and yellow, silicone mouthpieces, beeswax, the Toolmaster, heavy duty wetnotes, E/O extension cables and WAM cords for strobes, and a foam-lined case.

How to choose

Almost every decision on this page comes down to fit rather than tier. Get the thread and the length right and the part does its job. Measure a hose along the route it actually takes, not point to point, and check both end fittings before you order. For gauges, decide where you want to read it first, because a console, a clipped-off short hose and a button gauge each call for a different dial size. Anything going into oxygen service needs to stay oxygen clean, so keep those parts away from general spares.

Buying Nautilus at Oyster Diving

We are a British dive shop staffed by divers, and this is a range we sell to people fixing or building something specific rather than browsing. Tell us the make and model of the regulator, wing or cylinder the part is going on and we will confirm the fitting before you spend anything. The Nautilus range sits alongside our wider technical diving, accessories and SMBs, reels and spools sections, so if something here does not suit your setup there is usually an alternative a click away.

Frequently asked questions

Which brands does Oyster Diving stock on this Nautilus page?

Every product on this page sits under the Nautilus vendor at Oyster Diving, so the whole range comes from one supplier and one stock holding. A few items carry a partner name in the product title rather than the Nautilus name: the DIRZone coldwater spools, the Divesoft professional flow meter and cylinder silencer, and an XS Scuba coil lanyard. They are stocked and shipped as part of the same Nautilus range.

How do I pick the right Nautilus hose length?

Work from where the hose has to finish, not from the regulator. Nautilus high pressure hoses are listed at 15cm, 20cm, 56cm, 62cm and 80cm: the short ones suit a button gauge or a transmitter sitting tight to the first stage, the longer ones suit a wrist or console gauge routed under the arm. Low pressure inflator hoses come at 56cm, 65cm and 74cm for most single-tank wings and jackets, with a 90cm option when the inflator sits high on a larger backplate and wing. If you are between two, measure the old hose end to end before you order.

What is the difference between the 52 mm and 63 mm Nautilus SPGs?

It is dial size and how you read it. The 52 mm gauges are the compact option and come in the widest choice here: 0-300 bar and 0-360 bar faces, tempered glass, chrome or black dial versions, and a variant supplied with a bolt snap and swivel so it clips straight to a chest D-ring. The 63 mm gauges give you a bigger face in 0-300 bar and a 0-400 bar oxygen version. There is also a slim 0-400 bar gauge with a Lexan lens, a 23 mm button gauge for a minimal setup, and a console pairing an SPG with a depth gauge on an 80 cm hose.

Does the Nautilus range cover oxygen and gas handling?

Yes, and it is one of the stronger parts of this range. There are oxygen versions of the 52 mm and 63 mm SPGs, a green 15 cm oxygen SPG hose so the service is obvious at a glance, and decanting hoses at 1 m and 2 m rated to 300 bar, with or without an INOX gauge. For analysis there is a Divesoft professional flow meter with a DIN G5/8 fitting. On the safety side you will find the SOS oxygen rescue kit and a complete version supplied with a steel 5 l cylinder.

What does Nautilus offer for cave, wreck and line work?

A complete line-laying kit. Caveline is braided PES in 1.5 mm and 2 mm, on roughly 200 m and 500 m spools, in natural and high-visibility yellow. Directional arrows come at 65 mm and 90 mm in red, white and yellow, with matching non-directional markers at 55 mm in the same three colours, sold in packs of ten. For deployment there are coldwater spools at 30 m and 40 m, a 15 m aluminium spool in fluorescent yellow, and DIRZone coldwater spools supplied with a stainless double ender. A buddy line and heavy duty wetnotes round it off.

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