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diff --git a/Documentation/user-manual.txt b/Documentation/user-manual.txt index ec6121cb2..d7c4028f5 100644 --- a/Documentation/user-manual.txt +++ b/Documentation/user-manual.txt @@ -566,6 +566,70 @@ JDivelog (see <<S_ImportingDivesJDivelog>>): subsurface MyDives.xml --import MacDiveDives.xml +[[S_DivePlanning]] +Planning dives +-------------- + +Subsurface supports planning of dives using open and closed circuit +equipment. Deco calculations with optionally displaying the ceiling is +done using a new implementation of Bühlmann ZH16 algorithm with +gradient factors. Since the planner and our implementation of +decompression algorithms are new and have received only a limited amount +of testing - WE STRONGLY RECOMMEND NOT TO PLAN DIVES SIMPLY BASED ON THE +RESULTS GIVEN HERE. + +Basic information that is to be inserted when planning a dive is the +planned start time of the dive, air consumption and planned depths and +segment times. There is also other information available for those who +are familiar with dive planning or use closed circuit rebrethers. + +[width="70%",cols="<5%,20%,<75%",grid="none",frame="none",style="monospaced"] +|=============================================================================== +|| Dive starts | +60:00 means that the dive is 60 minutes in the future +|| Surface Pressure | Air pressure on surface, default 1013 should suffice for most +|| SAC during dive | Air consumption during the dive, use conservative value based on your own air consumption e.g. 20l/min +|| SAC during decostop | Air consumption during decompression stop, e.g. 17 l/min +|| GFlow | Gradient factor low value affects the ceiling calculation, leave to default if you are not familiar with GF +|| GFhigh | Gradient factor high value affects the ceiling calculation, leave to default if you are not familiar GF +|| **Ending Depth** | Depth where current segment ends, can be used for ascending, descending and level +|| **Segment Time** | +3 min is relative time from segment start, 7 is an absolute time from the start of the dive +|| **Gas Used** | Mix used; AIR, EAN32, 15/50 (compressed air, 32% nitrox, and trimix) +|| **CC SetPoint** | ***FIX*** This has something to do with rebrethers so better leave empty if you are like me +|=============================================================================== + +Information marked with bold is used multiple times to do the actual +planning of the dive. So let's plan a dive to 20 meters lasting 20 +minutes at that depth and another 10 minutes in 10 meters. We'll only +concentrate on the dive profile here filling the segments. + +[width="30%",cols="<15%,10%,<15%,<60%",grid="none",frame="none",style="monospaced"] +|=============================================================================== +|| 20 | +3 | AIR +|| 20 | +20 | +|| 10 | +1:30 | +|| 10 | +10 | +|=============================================================================== + +So we define the ending depth for the first segment to be 20 meters +(assuming metric preferences, you can also define the depth explicitly +to m or ft). We will take it easy and descent takes 3 minutes from +surface to the planned depth. Then we spend 20 minutes in same level +using same air as before (used gas is left empty). + +Ascent to 10 meters will take one and half minutes that is slower than +the fastest recommendation. However, as you can see in Subsurface's +calculations it is still marked with yellow, meaning somewhat +conservative speed (green would be conservative and red on the fast +side). After the defined 10 minutes at even depth of 10 meters we let +Subsurface calculate how we will surface. If decompression is required +these stops are taken into account and can be easily visualised by +setting the first depth to e.g. 30 meters. + +Pre-populated segments can be left empty and new segments can be added +by clicking the 'Add waypoint'. Note that if you go to edit previous +segments, the later segments values are not properly included in the +calculation until they get a focus out event or 'OK' is clicked. + [[S_Menu]] The menu and sub-menus ---------------------- @@ -624,6 +688,12 @@ When you enable ascent for your dives, within the dive profile, a yellow marker with exclamation sign (!) will show on the points where you have ascended. +The Planner menu +~~~~~~~~~~~~~~~~ + +This men opens up a dive planning dialog. The dive planning is described +in <<S_DivePlanning>>. + The Help menu ~~~~~~~~~~~~~ |