This panel contains the date, time and place information for a particular dive, environmental conditions, co-divers and buddies, as well as some descriptive information. If one clicks on the Dive Notes tab, the following fields are visible:

The Time field reflects the date and the time of the dive. By clicking the date, a calendar is displayed from which one can choose the correct date. Press ESC to escape from the calendar. The time values (hour and minutes) can also be edited directly by clicking on each of them in the text box and by overtyping the information displayed. The default date is the present date and the default time is an hour in advance of the present time.

Air and water temperatures: the air and water temperatures during the dive can be typed directly on the fields to the right of the Start time. Temperature units are not needed, as they will be automatically supplied by Subsurface. Only the numerical value must be typed by the user (the units selected in the Preferences will determine whether metric or imperial units are used).

Location: Here the name of the dive site can be entered, e.g. "Tihany, Lake Balaton, Hungary". Auto completion of location names will make this easier if one frequently dives at the same sites.

Coordinates: The geographic coordinates of the dive site should be entered here. These can come from three sources:

Southern hemisphere latitudes are given with a S, e.g. S30°, or with a negative value, e.g. -30.22496. Similarly western longitudes are given with a W, e.g. W07°, or with a negative value, e.g. -7.34323.

Please note that GPS coordinates of a dive site are linked to the Location name - so adding coordinates to dives that do not have a location description will cause unexpected behaviour (Subsurface will think that all of these dives have the same location and try to keep their GPS coordinates the same).

Divemaster: The name of the dive master or dive guide for this dive can be entered here. Again, this field offers auto completion based on the list of dive masters in the current logbook.

Buddy: In this field one can enter the name(s) of the buddy / buddies (separated by commas) who accompanied the user on the dive. Auto completion is offered based on the list of buddies in the current logbook.

Suit: The type of diving suit used for the dive can be entered here. As with the other items, auto completion of the suit description is available. Some dry-suit users may choose to use this field to record what combination of suit and thermal protection undersuit was used.

Rating: One can provide a subjective overall rating of the dive on a 5-point scale by clicking the appropriate star on the rating scale.

Visibility: Similarly, one can provide a rating of visibility during the dive on a 5-point scale by clicking the appropriate star.

Tags: Tags that describe the type of dive performed may be entered here (separated by commas). Examples of common tags are boat, drift, training, cave etc. Subsurface has many built-in tags. Auto completion is once again offered. For instance, if cav was typed, then the tags cave and cavern are shown for the user to choose from.

Notes: Any additional information can be typed here.

The Save and Cancel buttons are used to save all the information for tabs in the info panel and in the dive profile panel, so there’s no need to use them until ALL other information has been added. Here is an example of a completed Dive Notes panel:

The Equipment tab allows the user to enter information about the type of cylinder and gas used, as well as the weights used for a dive. This is a highly interactive part of Subsurface and the information on cylinders and gases (entered here) affects the behaviour of the dive profile (top right-hand panel).

Cylinders: The cylinder information is entered through a dialogue that looks like this:

The + button at the top right allows the user to add more cylinders for this dive. The dark dustbin icon on the left allows one to delete information for a particular cylinder. Note that it is not possible to delete a cylinder if it is used during the dive. One cylinder is implicitly used in the dive, even without a gas change event. Thus the first cylinder cannot be deleted until another cylinder is created.

Start by selecting a cylinder type on the left-hand side of the table. To select a cylinder, click in the Type box. This brings up a button that can be used to display a dropdown list of cylinders:

The drop-down list can be used to select the cylinder type used for the dive or the user may start typing in the box which shows the available options for the entered characters. The Size of the cylinder as well as its working pressure (WorkPress) will automatically be shown in the dialogue. If a cylinder is not shown in the dropdown list, type the name and description of that cylinder into the Type field.

Next, indicate the starting pressure and the ending pressure of the gas used during the dive. The unit of pressure (metric/imperial) corresponds to the setting in the Preferences.

Finally, type in the gas mixture used in the O2% field. If air was used, a value of 21% can be entered on this field, or it might be left blank. If nitrox or trimix were used, their percentages of oxygen and/or helium must be specified. Any inappropriate fields should be left empty. After typing the information for the cylinder, press ENTER on the keyboard or click outside the cell that contains the cursor. Information for any additional cylinders can be added by using the + button at the top right hand. Following is an example of a complete description for a dive made using two cylinders (air and EAN50):

Weights: Information about the weight system used during a dive can be entered using a dialogue very similar to that for the cylinder information. If the user clicks the + button on the top right of the weights dialogue, the table looks like this:

If one then clicks on the Type field, a drop-down list becomes accessible through a down-arrow:

The drop-down list can then be used to select the type of weight system or the user may start typing in the box which shows the available options for the entered characters. In the Weight field, the weight used during the dive must be typed. After typing the information for the weight system the user must either press ENTER on the keyboard or click outside the cell that contains the cursor. It is possible to enter information for more than one weight system by adding an additional system using the + button on the top right hand. Weight systems can be deleted using the dustbin icon on the left hand. Here is an example of information for a dive with two types of weights: integrated and a weight belt:

There’s NO need to click the Save button before the dive profile has been completed.

The Dive Profile (a graphical representation of the depth of the dive as a function of time) is indicated in the panel on the top right hand of the Subsurface window. When a dive is manually added to a logbook, Subsurface presents a default dive profile that needs to be modified to best represent the dive being described:

Modifying the dive profile: When the cursor is moved around the dive profile, its position is indicated by two coloured lines (red and green) as shown below. The depth and time that the cursor represents are indicated at the top of the black information box (@ and D). The units (metric/imperial) on the axes are determined by the Preference settings. The dive profile itself comprises several line segments demarcated by waypoints (white dots on the profile, as shown above). The default dive depth is 15 m. If the dive depth was 20 m then the user needs to drag the appropriate waypoints downwards to represent 20 m. To add a waypoint, double-click on any line segment. To move an additional waypoint, drag it. To remove this waypoint, right-click on it and choose "Remove this point" from the context menu. The user needs to drag the waypoints to represent an accurate time duration for the dive. Below is a dive profile that represents a dive to 20 m for 30 min, followed by a 5 minute safety stop at 5 m.

Specifying the gas composition: The gas composition used is clearly indicated along the line segments of the dive profile. This defaults to the first gas mixture specified in the Equipment tab, which was air in the case of the profile illustrated above. The gas mixtures of segments of the dive profile can be edited. This is done by right-clicking on the particular waypoint and selecting the appropriate gas from the context menu. Changing the gas for a waypoint affects the gas shown in the segment to the left of that waypoint. Note that only the gases defined in the Equipment tab appear in the context menu.

Below is the profile of a dive to 20 m for 30 min and with a switch from air to EAN50 at the end of the duration at 20m. In this case the first cylinder in the Equipment tab contained air and the second cylinder contained EAN50.

The information entered in the Dive Notes tab, the Equipment tab as well as the Dive Profile can now be saved in the user’s logbook by using the two buttons on the top right hand of the Dive Notes tab. If the Save button is clicked, the dive data are saved in the current logbook. If the Cancel button is clicked, the newly entered dive data are discarded. When exiting Subsurface, the user will be prompted once more to save the logbook with the new dive(s).

The use of dive computers allows the collection of a large amount of information about each dive, e.g. a detailed record of depth, duration, rates of ascent/descent and of gas partial pressures. Subsurface can capture this information and present it as part of the dive information, using dive information from a wide range of dive computers. The latest list of supported dive computers can be found at: Supported dive computers.

To import dive information from a dive computer to a computer with Subsurface, it is necessary that the two pieces of equipment communicate with one another. This involves setting up the communications port (or mount point) of the computer with Subsurface that communicates with the dive computer. In order to set up this communication, one needs to find the appropriate information to instruct Subsurface where and how to import the dive information. Appendix A provides the technical information to help the user achieving this for different operating systems and Appendix B has dive computer specific information.

After this, the dive computer can be hooked up to the user’s PC, which can be achieved by following these steps:

Dive computers tend to keep a certain number of dives in their memory, even though these dives have already been imported to Subsurface. For that reason Subsurface only imports dives that have not been uploaded before. This makes the download process faster on most dive computers and also saves battery power of the dive computer (at least for those not charging while connected via USB). If, for some reason, the user wishes to import ALL dives from the dive computer, even though some may already be in the logbook, then check the check box labelled Force download of all dives.

It may be necessary to distinguish between different dive computers used to upload dive logs to Subsurface. For instance if one’s partner’s dive computer is the same make and model as one’s own and dive logs are uploaded from both dive computers to the same Subsurface computer, then one would perhaps like to call one dc "Alice’s Suunto D4" and the other one "Bob’s Suunto D4". Alternatively, perhaps a technical diver dives with two or more dive computers of the same model, the logs of both (or all) being uploaded. In this case it might be prudent to call one of them "Suunto D4 (1)" and another one "Suunto D4 (2)". This is easily done in Subsurface. On the Main Menu, select Log → Edit device names. A dialog opens, indicating the current Model, ID and Nickname of the dive computers used for upload. Edit the Nickname field for the appropriate dive computer. After saving the Nickname, the dive logs show the nickname for that particular device instead of the model name, allowing easy identification of devices.

The information from the dive computer is not complete and more details must be added in order to have a fuller record of the dives. To do this, the Dive Notes and the Equipment tabs on the top left hand of the Subsurface window should be used.

The date and time of the dive, gas mixture and (often) water temperature is shown as obtained from the dive computer, but the user needs to add some additional information by hand in order to have a more complete dive record. If the contents of this tab is changed or edited in any way, the message in a blue box at the top of the panel indicates that the dive is being edited. If one clicks on the Dive Notes tab, the following fields are visible:

The Time field reflects the date and time of the dive. By clicking the date, a calendar is displayed from which one can choose the correct date. Press ESC to close the calendar. The time values (hour and minutes) can also be edited directly by clicking on each of them in the text box and by overtyping the information displayed.

Air/water temperatures: Air and water temperatures during the dive are shown in these fields to the right of the Start time. Many dive computers supply water temperature information and this field may therefore not require further editing. If air temperature is not provided by the dive computer, the first temperature reading might be used for the air temperature. Generally this is close enough to the real air temperature as the change in the temperature sensor reading is quite slow to follow the changes in the environment. If editing is required, only a value is required, the units of temperature will be automatically supplied by Subsurface (according to the Preferences, metric or imperial units will be used).

Location: In this field one should type in text that describes the site where the dive was performed, e.g. "Tihany, Lake Balaton, Hungary". Auto completion of location names will make this easier if one frequently dives at the same sites.

Coordinates: The geographic coordinates of the dive site should be entered here. These can come from three sources:

Southern hemisphere latitudes are given with a S, e.g. S30°, or with a negative value, e.g. -30.22496. Similarly, western longitudes are given with a W, e.g. W07°, or with a negative value, e.g. -7.34323.

Please note that GPS coordinates of a dive site are linked to the Location name - so adding coordinates to dives that do not have a location description will cause unexpected behaviour (Subsurface will think that all of these dives have the same location and try to keep their GPS coordinates the same).

Divemaster: The name of the dive master or dive guide for this dive should be entered in this field which offers auto completion based on the list of dive masters in the current logbook.

Buddy: In this field, one enters the name(s) of the buddy / buddies (separated with commas) who accompanied him/her on the dive. Auto completion based on the list of buddies in the current logbook is offered.

Suit: Here the type of diving suit used for the dive can be entered. Auto completion of the suit description is available. Some dry-suit users may choose to use this field to record what combination of suit and thermal protection undersuit was used.

Rating: One can provide a subjective overall rating of the dive on a 5-point scale by clicking the appropriate star on the rating scale.

Visibility: Similarly, one can provide a rating of visibility during the dive on a 5-point scale by clicking the appropriate star.

Tags: Tags that describe the type of dive performed can be entered here (separated by commas). Examples of common tags are boat, drift, training, cave, etc. Subsurface has many built-in tags. If the user starts typing a tag, the program will list the tags that correspond to the typing. For instance, if the user typed cav, then the tags cave and cavern are shown for the user to choose from.

Notes: Any additional information for the dive can be entered here.

The Save and Cancel buttons are used to save all the information for tabs in the info panel and in the dive profile panel, so there’s no need to use them until ALL other information has been added. Here is an example of a completed Dive Notes panel:

The Equipment tab allows one to enter information about the type of cylinder and gas used as well as the weights used for the dive. The message in a blue box at the top of the panel:

indicates that the dive is being edited. This is a highly interactive part of Subsurface and the information on cylinders and gases (entered here) determines the behaviour of the dive profile (top right-hand panel).

Cylinders: The cylinder information is entered through a dialogue that looks like this:

In most cases Subsurface obtains the gas used from the dive computer and automatically inserts the gas composition(% oxygen) in the table. The + button at the top right allows the user to add more cylinders for this dive. The dark dustbin icon on the left allows the deletion of information for a cylinder. Note that it is not possible to delete a cylinder if it is used during the dive. A cylinder might be implicitly used in the dive, even without a gas change event.

The user should start by selecting a cylinder type on the left-hand side of the table. To select a cylinder, the cylinder type box should be clicked. This brings up a list button that can be used to display a dropdown list of cylinders:

The drop-down list can then be used to select the cylinder type that was used for this dive or the user may start typing in the box which shows the available options for the entered characters. The Size of the cylinder as well as its working pressure (WorkPress) will automatically be shown in the dialogue.

Next one must indicate the starting pressure and the ending pressure of the specified gas during the dive. The unit of pressure (metric/imperial) corresponds to the settings chosen in the Preferences.

Finally, provide the gas mixture used. If air was used, the value of 21% can be entered or this field can be left blank. If nitrox or trimix were used, their percentages of oxygen and/or helium should be entered. Any inappropriate fields should be left empty. After typing the information for the cylinder, either press ENTER on the keyboard or click outside the cell that contains the cursor. Information for any additional cylinders can be added by using the
button at the top right hand. Following is an example of a complete description for a dive using two cylinders (air and EAN50):

Weights: Information about the weight system used can be entered using a dialogue very similar to that of the cylinder information. If one clicks the + button on the top right of the weights dialogue, the table looks like this:

By clicking on the Type field, a drop-down list becomes accessible through a down-arrow:

The drop-down list can then be used to select the type of weight system used during the dive or the user may start typing in the box which shows the available options for the entered characters. In the Weight field, type in the amount of weight used during the dive. After specifying the weight system, the user can either press ENTER on the keyboard or click outside the cell with the cursor. It is possible to enter information for more than one weight system by adding an additional system using the + button on the top right hand. Weight systems can be deleted using the dustbin icon on the left hand. Here is an example of information for a dive with two types of weights: integrated as well as a weight belt:

Many divers wish to annotate their dives with text that indicate particular events during the dive, e.g. "Saw dolphins", or "Released surface bouy". This is easily done:

The information entered in the Dive Notes tab and the Equipment tab can be saved by using the two buttons on the top right hand of the Dive Notes tab. If the Save button is clicked, the dive data are saved. If the Cancel button is clicked, then the newly entered dive data are deleted, although the dive profile obtained from the dive computer will be retained. When the user exits Subsurface there is a final prompt to confirm that the new data should be saved.

Importing dives from other software is performed through a universal interface that is activated by selecting Import from the Main Menu, then clicking on Import Log Files. This brings up the dialogue A below.

Towards the bottom right is a dropdown selector with a default label of Dive Log Files which gives access to the different types of direct imports available, as in dialogue B, above. Currently these are:

Selecting the appropriate file in the file list of the dialogue opens the imported dive log in the Subsurface Dive List. Some other formats, not accessible through the Import dialogue are also supported, as explained below.

Since Mares utilise proprietary Windows software not compatible with multi-platform applications, these dive logs cannot be directly imported into Subsurface. Mares dive logs need to be imported using a three-step process, using www.divelogs.de as a mechanism to extract the dive log information.

The import of dive information from divelogs.de is simple, using a single dialogue box. The Import→Import form Divelogs.de option should be selected from the Main Menu. This brings up a dialogue box (see figure on left [A] below). Enter a user-ID and password for divelogs.de into the appropriate fields and then select the Download button. Download from divelogs.de starts immediately, displaying a progress bar in the dialogue box. At the end of the download, the success status is indicated (see figure on the right [B], below). The Apply button should then be selected, after which the imported dives appear in the Subsurface Dive List panel.

Sometimes dive computers export dive information as files with comma-separated values (.CSV). For example, the APD Inspiration and Evolution closed circuit rebreather (CCR) systems export dive information in a CSV formatted file that normally contains information for a single dive only. These files can easily be imported into Subsurface. CSV files are normally organised into a single line that provides the headers of the data columns, followed by the data, one record per line. CSV files can be opened with a normal text editor. Following is a highly simplified and shortened example of a CSV file from an APD rebreather:

Note that each title may comprise more than one word; for instance Dive Time (s) in the above data example. Before being able to import the data to Subsurface one first needs to know:

Armed with this information, importing the data into Subsurface is straightforward. Select Import→Import Log Files from the main menu. In the resulting file selection menu, select CSV files, after which a common configuration dialog appears for all the files with a CSV extension:

There are pre-configured definitions for some dive computers, e.g. the APD rebreathers. If the user’s dive computer is on this list, it should be selected using the dropdown box labeled Pre-configured imports. Select the button at the bottom right to indicate whether the dive data are in metric of imperial units. Finally OK should be clicked and the dive will be imported and listed in the Dive List tab of Subsurface.

If the dive computer is not on the pre-configured list, the user must select the Field Separator (TAB or comma) for the particular CSV file, using the appropriate dropdown list. and indicate which columns in the CSV file contain which data variables. For each data column used for import, the user must check the appropriate check box and indicate in which column these data are found. For instance, the image above corresponds to the dialogue that would apply to the CSV data set described above the image. After completing the column specification, select the OK button and the dive will be imported and listed in the Dive List tab of Subsurface.

If one keeps dive logs in a spreadsheet, there is an option to import those dives as well. Spreadsheet data, exported as a CSV file, can be imported to Subsurface. When importing manually kept log files, the information needed is quite different as we are importing only metadata, not profile samples.

Similarly to importing dives in CSV format (see above), one needs to know the internal format of the CSV data to import.

Importing manually kept CSV log files is quite straight forward, but there might be many fields and counting the field numbers is error prone. Therefore validation of the data to be imported is critical.

To import the dives, select Import→Import Log Files from the menu bar. If the CSV option in the dropdown list is selected and the file list includes file names ending with .CSV, one can select the Manual dives tab that will bring up the following configuration dialog:

The input fields can be configured as appropriate, and when everything is done the OK button should be selected to perform the import. New dives should appear in the Dive List area of Subsurface.

On first use the app has three options:

Download dive(s) from a dive computer or enter them manually into Subsurface before obtaining the GPS coordinates from the server. The download dialog can be reached via Ctrl+G or from the Subsurface Main Menu Import → Import GPS data from Subsurface Service, resulting in the image on the left (A), below. On first use the DIVERID text box is blank. Provide a DIVERID, then select the Download button to initiate the download process, after which the screen on the right (B) below appears:

Note that the Apply button is now active. By clicking on it, users can update the locations of the newly entered or uploaded dives in Subsurface which applies the coordinates and names entered on the app for all the new dives that match the date-times of the uploaded GPS localities. If one has entered the name of the dive location in Subsurface before downloading the GPS coordinates, this name will take precedence over downloaded one.

Since Subsurface matches GPS locations from the Android device and dive information from the dive computer based on date-time data, automatic assignment of GPS data to dives is dependent on agreement of the date-time information between these two devices. Although Subsurface has a wide range tolerance, it may be unable to identify the appropriate dive if there is a large difference between the time in the dive computer and that of the Android device, resulting in no updates.

Similar date-times may not always be possible and there may be many reasons for this (e.g. time zones), or Subsurface may be unable to decide which is the correct position for a dive (e.g. on repetitive dives while running background service there may be several locations that would be included in the time range that fit not only the first dive, but one or more subsequent dives as well). A workaround for this situation to manually edit the date-time of a dive in the Subsurface Dive List before downloading the GPS data and then to change the date-time back again after downloading GPS data.

Left-lick on a dive or on a group of dives on the dive list. Then right-click on this dive or group of dives and choose the option Load Images:

The system file browser appears. Select the folder and photographs that need to be loaded into Subsurface and click the Open button.

This brings one to the time synchronisation dialog, shown below. The critical problem is that the time synchronisation is not perfect between the dive computer used during a dive, and the camera used during that same dive. These two devices often differ by several minutes. If Subsurface can achieve synchronisation, then the exact times of photographs can be used to position photographs on the dive profile.

Subsurface achieves this synchronisation in two ways:

If the timestamp of a photograph is long before or after the dive, it is not placed on the dive profile. If the timestamp of the photo is within 30 minutes of the dive, it is shown.

In order to view the photos added to a dive, activate the show-photos button in the tool bar to the left of the dive profile:

After the images have been loaded, they appear in two places:

If one hovers with the mouse over any of the photo icons, then a thumbnail photo is shown of the appropriate photo. See the image below:

Clicking on the thumbnail brings up a full size photo overlaid on the Subsurface window. This allows good viewing of the photographs that have been added (see the image below). Note that the thumbnail has a small dustbin icon in the bottom right hand corner (see image above). If one selects the dustbin, the image is removed from the dive. Therefore some care is required when clicking on a thumbnail. Images can also be deleted using the Photos tab (see text below).

Photographs associated with a dive are shown as thumbnails in the Photos tab of the Dive Notes panel. Photos taken in rapid succession during a dive (therefore sometimes with large overlap on the dive profile) can easily be accessed in the Photos tab. This tab serves as a tool for individually accessing the photos of a dive, while the stubs on the dive profile give an indication of when during a dive a photo was taken. By single-clicking on a thumbnail in the Photos panel, a photo is selected. By double-clicking a thumbnail, the full-sized image is shown, overlaying the Subsurface window. A photo can be deleted from the Photos panel by selecting it (single-click) and then by pressing the Del key on the keyboard. This removes the photo both from the Photos tab as well as the dive profile.

Most underwater photographers store their photos on an external drive. If such a drive can be mapped (almost always the case) the photos can be directly accessed by Subsurface. This facilitates the interaction between Subsurface and an external repository of photos. When associating a dive profile with photos from an external drive, the normal procedure of selection and synchronisation (see text above) is used. However, after the external drive has been disconnected, Subsurface cannot access these photos any more. If the display of photos is activated (using the toolbox to the left of the Dive Profile), the program only shows a small white dot where each photo should be on the dive profile. In addition the Photos tab only shows the file names of the photos. This is normal behaviour. If, later, the external drive with the photos is connected again, the photos can be seen in the normal way.

The default information in the Dive List includes, for each dive, Dive_number, Date, Rating, Dive_depth, Dive_duration and Dive_location. This information can be contolled and changed by right-clicking on the header bar of the Dive List. For instance, a right-click on the Date header brings up a list of items that can be shown in the dive list (see above). Select an item to be shown in the Dive List or to be deleted from the dive list, and the list is immediately updated accordingly. Preferences for information shown in the Dive List is saved and used when Subsurface is re-opened.

Many divers have long dive lists and it may be difficult to locate all the dives at a particular site. By pressing Ctl-F on the keyboard, a text box is opened at the top left hand of the Dive List. Type the name of a dive site in this text box and the Dive List is immediately filtered to show only the dives for that site.

Normally, in the dive list, minimal information is included in the trip title. More information about a trip can be added by selecting its trip title from the Dive List. This shows a Trip Notes tab in the Dive Notes panel. Here users can add or edit information about the date/time, the trip location and any other general comments about the trip as a whole (e.g. the dive company that was dived with, the general weather and surface conditions during the trip, etc.). After entering this information, users should select Save from the buttons at the top right of the Trip Notes tab. The trip title in the Dive List panel should now reflect some of the edited information.

Once the dives have been grouped into trips, users can expand one or more trips by clicking the arrow-head on the left of each trip title. This expands the selected trip, revealing the individual dives performed during the trip.

If a user right-clicks after selecting a particular trip in the dive list, the resulting context menu allows several possibilities to expand or collapse dives within trips. This includes expanding all trips, collapsing all trips and collapsing all trips except the selected one.

By right-clicking on a selected trip title in the Dive List panel, a context menu shows up that allows the merging of trips by either merging of the selected trip with the trip below or with the trip above.

If a trip includes five dives, the user can split this trip into two trips (trip 1: top 3 dives; trip 2: bottom 2 dives) by selecting and right-clicking the top three dives. The resulting context menu allows the user to create a new trip by choosing the option Create new trip above. The top three dives are then grouped into a separate trip. The figures below shows the selection and context menu on the left (A) and the completed action on the right (B):

Dives can be permanently deleted from the dive log by selecting and right-clicking them to bring up the context menu, and then selecting Delete dive(s). Typically this would apply to a case where a user wishes to delete workshop calibration dives of the dive computer or dives of extremely short duration.

Users can unlink dives from the trip to which they belong. In order to do this, select and right-click the relevant dives to bring up the context menu. Then select the option Remove dive(s) from trip. The dive(s) now appear immediately above the trip to which they belonged.

Selected dives can be moved from the trip to which they belong and placed within the trip immediately above the currently active trip. To do this, select and right-click the dive(s) to bring up the context menu, and then select Add dive(s) to trip immediately above.

Sometimes it is necessary to adjust the start time of a dive. This may apply to situations where dives are performed in different time zones or when the dive computer has an erroneous time. In order to do this, user must select and right-click the dive(s) to be adjusted. This action brings up the context menu on which the Shift times option should be selected. User must then specify the time (in hours and minutes) by which the dives should be adjusted and click on the option indicating whether the time adjustment should be forwards or backwards.

Sometimes a dive is briefly interrupted, e.g. if a diver returns to the surface for a few minutes, resulting in two or more dives being recorded by the dive computer and appearing as different dives in the Dive List panel. Users can merge these dives onto a single dive by selecting the appropriate dives, right-clicking them to bring up the context menu and then selecting Merge selected dives. It may be necessary to edit the dive information in the Dive Notes panel to reflect events or conditions that apply to the merged dive. The figure below shows the depth profile of two such dives that were merged: