Catalogue

Sherwood Wisdom 3 dive computer has two control buttons - SELECT (side) and ADVANCE (front). Using them and their combos you will easy access required info, no matter whether you are diving or at surface.

To help the diver in assessing conditions in visual way, it has 3 Bar Graphs:

1. Nitrogen Loading Bar Graph shows your No-Deco or Deco status (it's located on the left side of the display);
2. Oxygen Loading Bar Graph (O2BG) represents oxygen toxicity from current dive or accumulated for 24 last hours (it's located on the right middle-top part of the display);
3. Variable Ascent Rate Bar Graph (VARI) (located on the bottom part of the right side of the screen) - displays how fast you ascend and if you exceed allowable rate - Sherwood Wisdom 3 will give you visual and audio alarms

Main display has few alternative screens to display many additional information and you will be able access them by pressing Select button.

Before diving, we may simulate or plan the next dive, and set Sherwood Wisdom 3 dive computer for desirable parameters.
All parameters divided into 4 Set Groups:

1. Set 1 Group (MODES):
• operating mode - Air, Nitrox, GAUGE;
• FO2 - Air, 21-50%;
• FO2 Default - ON/OFF;
• PO2 alarm value - 1.2-1.6 ATA
2. Set 2 Group (ALARMS):
• alarms - ON/OFF;
• Ascent alarm - ON/OFF;
• Depth alarm - ON/OFF/9-99 meters;
• Turn Pressure alarm - ON/OFF/69-209 bar;
• End Pressure alarm - ON/OFF/20-104 bar;
• Reserve Time alarm - ON/OFF/1-30 min;
• DECO alarm - ON/OFF;
• PO2 alarm - ON/OFF
3. Set 3 Group (UTILITIES):
• wet activation - ON/OFF;
• units;
• sample rate - 15/30/60 sec;
• Deep Stop - ON/OFF
4. Set Group 4 (Date/Time):
• hour & hour format;
• month & year;
• day

Sherwood Wisdom 3 dive computer has Dive Planner with range 9-57 meters and Dive Simulator that allows the user test and learn dive computer behavior without actually getting wet. It is very handy addition to this instrument and very useful for diver who is new to this device.

I loved dive computer's interface and menu set, as it is very intuitive and easy to follow, so I didn't have any troubles setting and using Sherwood Wisdom 3.

Sherwood Wisdom 3: Diving With Air & Nitrox

I had Sherwood Wisdom 3 for weekend only, so I was able to make only 5 dives with it and without using it in GAUGE mode (I didn't want it to lock GAUGE for 24 hours!). And my review of this dive computer is based on this short period of possessing it. This instrument has large display - that's what I like! Could see even the smallest digits without any problems!

As other Sherwood dive computers, this one is very intuitive and easy to use. If you set dive computer for Nitrox diving - it will display additional information on 2nd alternative screen about current PO2 level and FO2 set point.

Copy this Sherwood Wisdom 3 No-Decompression Displays Card for your Reference and Share with your friends and buddies!

As I went down below 10 meters, so upon ascending, Sherwood Wisdom 3 gave me Safety Stop (SS) prompt with all appropriate dive data displayed, with the most important in this case - Stop Depth and Countdown Timer. Safety Stop is an automatic reminder in contrast to Deep Stop (DS) function, which I could turn ON/OFF. Deep Stop gets activated if I reach depths more than 24 meters and recommended Stop Depth is calculated in 1/2 of max depth.
Deep Stop feature came with updated versions of Wisdom 2 and became as a standard function in Wisdom 3. Initial Sherwood 2 dive computers didn't have this function.

Ascent rate indicator is located on the lower sector of the right side of the display, so I had full representation of my ascent speed - visual and audio alarm.

Other two important parameters that Sherwood Wisdom 3 monitors are PO2 and O2 conditions. If I get into the situation where PO2 and O2 will be higher than allowed - dive computer will alarm me by all available means and every alarm display has main and alternative screens with vital data displayed.

Alarms regarding air consumption are Turn Pressure and End Pressure alarms, where the first one is the pressure set point at which you stop swimming away from the entry point and begin your return back to this entry point, and the latter is used to program my cylinder ending pressure.

All dive data was displayed very clearly, and it was very easy to read display. Audio alarms were loud, and buttons were easy to press (with reasonable touch).

If I exceed No-Decompression Limits (NDLs), Sherwood Wisdom 3 dive computer will switch to Decompression mode and all calculations from this moment will start for that mode only.
After having that, I must ascend safely to the required depth, shown on the display, or a bit deeper, and stay at that depth required time that is shown as well. That's a standard DECO procedure, but I didn't get close to it. So all decompression data on DECO main and alternative displays was taken from Sherwood page:

• scrolling graphics DECO-STOP;
• DECO Stop and Time;
• Total Ascent Time (TAT);
• cylinder pressure;
• current depth;
• max depth;
• Air Time Remaining (ATR);
• current PO2;
• FO2 set point;
• applicable icons and bar graphs

Also I could create out of my curiosity violations during Decompression Mode, like Conditional violation or Delayed violations, which means that I ascended shallower than required DECO Stop Depth and stayed at that level for some time, or Decompression Stop depth must be performed within depth of 18 - 21 meters, or if I descended deeper than maximum operational depth - 100 meters in Air/Nitrox and 120 meters in GAUGE. Of course I didn't do any of those things, so let's take everything related to DECO violations from Sherwood as they said.

Sherwood Wisdom 3: Diving In GAUGE Mode

Another dive mode of Sherwood Wisdom 3 dive computer is GAUGE. In this mode instrument doesn't calculate diver's No-Decompression Limits and works as a depth gauge and timer only. It is possible diving in GAUGE using technical gas mixes, but all NDL calculations are your own responsibility! After diving in GAUGE, dive computer locks for 24 hours and only after this time elapsed it starts working as a full-featured scuba computer.

Below is a summary from main and alternative displays while diving in GAUGE mode:

• max depth;
• Elapsed Dive Time (EDT);
• current depth;
• Air Time Remaining (ATR);
• cylinder pressure;
• temperature;
• time;
• applicable icons and VARI (if ascending)

From my experience I may tell that we got another perfect example of the dive computer dedicated to recreational diving with great functionality, well-structured user docs and intuitive interface. I didn't have any troubles when diving - just enjoying underwater and following Sherwood Wisdom 3 prompts.

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After the transition period of 10 min after resurfacing I could access Last dive display, Logbook and History screens, check out Desaturation and No-Fly times, or plan my next dive by using Dive Planner and use Dive Simulator.

Below is the list of functions that are available on surface:

1. Dive Simulator - great help to familiarize yourself with Sherwood Wisdom 3 dive computer - after setting initial data, I was able to make a "virtual" dive and see what dive data can be dispayed during a real dive;
2. Dive Planner - in this mode you will get No-Decompression dive times and depths, according to residual nitrogen or oxygen from previous dives;
3. Desaturation and No-Fly Countdown Timers;
4. LogBook - contains 3 pages of dive data and information of the 50 most recent dives;
5. PC data download - with optional PC data cable we may download dive data to PC for further viewing, organizing and printing the dive profiles

I didn't have PC interface cable, so I wouldn't comment on this, but I was told by the owner of Sherwood Wisdom 3, that PC download/upload function works well, so let's take it from his words!

Sherwood Wisdom 3: What Divers Say

I have been using Sherwood Wisdom 3 dive computer just for couple of days, so I couldn't assess each and every function of this instrument. But from my experience - Wisdom 3 is great hose air-integrated dive computer and divers who don't mind having extra hose on their gear would definitely appreciate all features of it.

I liked large display with all digits shown nice-n-clear and strong backlight - can be perfect for night dives. Audio was quite loud to grab my attention, so I didn't miss anything important.

Sherwood Wisdom 3	Dive-Computer-Wizard Rating

I can recommend Sherwood Wisdom 3 dive computer to any beginner and recreational diver who prefers hose air-integrated instrument with easy and friendly setup without getting to much into the technical staff! And especially white model of Wisdom 3 looks great, like a flashy toy!