Tips for Buying a Dive Computer

Do you dive with Nitrox?

If there's even the slightest chance of you using nitrox, or wanting to in the future, then it makes sense to buy a dive computer that supports nitrox diving. Generally, these dive computers only cost a little more, and buying one that can match your pace as you advance through your training and diving experiences will prove cheaper in the long run.

Do you want to show your cylinder contents?

Air-integrated dive computers monitor how much gas you have remaining during a dive, and your breathing rate. They will tell you how much time you have left at a given depth (whether that's limited by your remaining air, or your dive time). The dive computer can also work out, if you're breathing slow, that you've absorbed less nitrogen and therefore can permit you to stay down longer. Longer dives - what's not to love?

Wrist or Console?

Generally this is a matter of preference. Bear in mind that if you choose a console computer and don't plan on taking your regs on your next dive trip, you'll either need to hire and use a dive computer you might be unfamiliar with, or take the dive computer console off of your regs and put it on the hire regs. Some people go for the 'big watch' style dive computers and wear them every day. Our preference, especially for technical and cave diving, is for a large, easy to read wrist mounted dive computer.

Safety Tip

Time-to-fly is the time you must wait between your last dive and ascending to altitude. Most dive computers display the amount of time remaining until residual nitrogen levels drop to the point where the computer considers a subsequent dive to be the same as a non-repetitive dive. This time may be described as a time-to-fly. However, even after considerable study, flying after diving recommendations remain controversial and continue to evolve. Decompression sickness statistics from Divers Alert Network (DAN) make it very clear that no current decompression theory and computer algorithm is able to account for all the complexities of decompression introduced by flying after diving. Instead, we encourage you to follow the May 2002 Flying After Diving Workshop recommendations published by DAN:

For a single no-stop-required dive, a minimum preflight surface interval of at least 12 hours is suggested.

For multiple dives in a single day, or multiple days of diving, a minimum preflight surface interval of at least 18 hours is suggested.

Wait substantially longer (i.e., 24 to 36 hours) if you have done any decompression-stop-required diving.

Rye Scallop Beds

Drift Dive | Boat access

Scallop Drift | © Phil Watson

Depth: 10 m (33 ft) to 17 m (56 ft)

The goal on a drift dive at the Rye Scallop Beds is to enable enough ground to be covered to ensure you can fill your catch bag with great big fat juicy scallops. The scallop beds move around a little, and there is no guarantee you will see scallops straight away. But rest assured you will see them.

In Summer the scallops can generally be found in the areas nearby with depths ranging from 14 metres to 17 metres. The scallops like the cooler deeper water in summer.

In Winter the scallops are typically found in the areas nearby with depths ranging for 10 metres to 15 metres. The move into shallower waters for added warmth in winter.

Typically you would head out to this dive site from the Rye Boat Ramp and head west. The dive site is midway between Blairgowrie Pier and Rye Pier, just out from the Tyrone Boat Ramp in the Whitecliffs area. The bottom is flat sand with Scallops, Stingrays, Sea Squirts, Flat Head, and Large Spider Crabs. (The crabs are not suitable for eating.)

Scallop Dive Site | © Phil Watdon

Divers have the opportunity to catch a feed of Scallops (Pecten fumatus) at this dive site. Remember your catch bag and current Victorian Recreational Fishing Licence. Please abide by all current fishing regulations, such as the bag limit of 100 scallops each, if you intend to catch scallops. See melbourne-scallop-dives for a list of other scallop dive sites near Melbourne.

Safety Tip: We recommend you read our boat-diving-safety and dive-float-and-flag pages and use the described Cray/Drift Buoy Line Diver Freedom System when drift diving from a private boat for scallops.

Boon Wurrung / Bunurong country

Traditional Owners — This dive site is in the traditional Country of the Boon Wurrung / Bunurong people of the Kulin Nation. This truly ancient Country includes parts of Port Phillip, from the Werribee River in the north-west, down to Wilson's Promontory in the south-east, including the Mornington Peninsula, French Island and Phillip Island, plus Western Port. We wish to acknowledge the Boon Wurrung as Traditional Owners. We pay respect to their Ancestors and their Elders, past, present and emerging. We acknowledge Bunjil the Creator Spirit of this beautiful land, who travels as an eagle, and Waarn, who protects the waterways and travels as a crow, and thank them for continuing to watch over this Country today and beyond.

Rye Scallop Beds Location Map

Latitude: 38° 20.812′ S (38.346867° S / 38° 20′ 48.72″ S)
Longitude: 144° 47.684′ E (144.794733° E / 144° 47′ 41.04″ E)
Datum: WGS84 | Google Map
Added: 2019-02-18 00:16:00 GMT, Last updated: 2021-05-15 08:19:59 GMT
Source: GPS
Nearest Neighbour: Geoffs Scallop Hole, 1,373 m, bearing 174°, S
Depth: 10 to 17 m.

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DISCLAIMER: No claim is made by The Scuba Doctor as to the accuracy of the dive site coordinates listed here. Should anyone decide to use these GPS marks to locate and dive on a site, they do so entirely at their own risk. Always verify against other sources.

The marks come from numerous sources including commercial operators, independent dive clubs, reference works, and active divers. Some are known to be accurate, while others may not be. Some GPS marks may even have come from maps using the AGD66 datum, and thus may need be converted to the WGS84 datum. To distinguish between the possible accuracy of the dive site marks, we've tried to give each mark a source of GPS, Google Earth, or unknown.