I am surveying and mapping the dive sites of Cape Town as a long term project. Wikitravel was how I made this information available to the public on a constantly updated format.
Most of the surveys are done by towing a surface marker buoy on a tight tether along a chosen contour, then after the dive I download the GPS track and transfer it to Inkscape and trace around it to show the shape of the site. A similar process is used for the outlines of reefs and wrecks, and some details are simply measured and sketched on site. On rare occasions the visibility is good enough to use photos and video to provide details.
Since March 2011 I have had access to unpublished data from the SA Council for Geoscience which did a sidescan sonar survey and fascies interpretation of parts of False Bay and the Atlantic seaboard of the Cape Peninsula for a reef ecology monitoring project. This data lacks detail of depth and can be difficult to interpret with precision, but it is excellent for identifying roughly where all the rocky areas are. However it is limited to places where the sonar fish is not likely to hit rocks, so there is still plenty of reef that has to be identified and mapped in other ways in the close inshore zone, Also it does not give depth profiles. The main value is that it is possible to be reasonably sure that most reef has been identified in these zones.
Most of the boat access sites were mapped from Blue Flash charters boats, as Blue Flash caters largely for a fairly regular clientele of advanced local divers, and is more inclined towards exploring new areas and opening up new sites, and a moderate number from Dive and Adventure and Pisces Diving boats. The owners support this project by allowing me a special rate for boat dives. The shore dives were done under my own power, usually alone, but sometimes with a few buddies who are prepared to swim along with me while I survey.
I would welcome participation from other local divers, but so far I have been unable to persuade any of them to actually go out and survey.
- Diving the Cape Peninsula and False Bay
- Diving in South Africa, Diving in South Africa/Sardine run and Diving in South Africa/SS Cariboo wreck
- Scuba diving
- Cruising on small craft
 Other South African dive regions
- Diving in Hermanus
- Diving in Port Elizabeth
- Diving Aliwal Shoal
- Diving Sodwana Bay
- Diving inland in South Africa
- Diving in Durban
- SURG home page
- Open Dive site Directory
 User pages
- List of Dive sites of CP&FB
- Wikitravel dive site map specifications
- User:Pbsouthwood/Reef types
- Scuba Diving and dive region and site article listing for export
- User:Pbsouthwood/Personal pages listing for export
 Shortcuts to galleries
Images used on dive site articles uploaded to Wikitravel Commons
- Image gallery for Aerial photos from DGS&M
- Image gallery of own photos for Cape Peninsula and False Bay dive sites A to B
- Image gallery of own photos for Cape Peninsula and False Bay dive sites C to F
- Image gallery of own photos for Cape Peninsula and False Bay dive sites G to M
- Image gallery of own photos for Cape Peninsula and False Bay dive sites N to Q
- Image gallery of own photos for Cape Peninsula and False Bay dive sites R to S
- Image gallery of own photos for Cape Peninsula and False Bay dive sites T to Z
- Image gallery of own photos of Nudibranchs for Pinnacle gallery
- Image gallery of own photos for Aliwal Shoal and Guinjata Bay sites
- Image gallery for photos from other photographers used for dive sites
- Image gallery for images with copyright expired due to age
- Image gallery of own photos for south coast dive sites
- Image gallery of own photos for Eastern Cape dive sites
- Wikitravel:Celebrate a contribution
- Now: Somerset West
Retired from Wikitravel
 Star sites and articles
- Diving the Cape Peninsula and False Bay/Pinnacle has reached star status as of 3/12/2009. See archived discussions
- Diving the Cape Peninsula and False Bay/Partridge Point has reached star status as of 24/09/2010. See archived discussions
- Diving the Cape Peninsula and False Bay/Photographer's Reef has reached Star status as of 12/11/2010. See archived discussions
- Diving the Cape Peninsula and False Bay has reached star status as of 28/11/2010. archived discussions
- Diving the Cape Peninsula and False Bay/Percy's Hole has reached star status as of 30/05/2010. See archived discussions
- Diving the Cape Peninsula and False Bay/MV Aster has reached star status as of 29/08/2011. See archived discussions
 Other interests include
- SURG (Southern Underwater Research Group) co-founder.
- Engineering, particularly underwater and low-cost solutions
- Underwater science, particularly marine invertebrates of my home waters.
- Underwater diving, Scuba and Surface supplied, scientific and recreational/technical, since 1983.
- Mapping dive sites
- Recording biodiversity of the local temperate reefs. FIN and Reef Atlas Project.
- Reef classification.
- Design and development of special purpose equipment for diving and underwater projects (Modular Diving Systems by Southwood Marine, and SURGware)
- Voluntary and contract work on scientific and commercial diving projects as diver and diving supervisor.
- Education, particularly relating to scientific, commercial and recreational diving. (Commercial diving instructor, ex lecturer at University of Stellenbosch, retired recreational diving instructor)
- Writing training material for commercial and recreational diver training.
- Providing comments and advice on scientific and commercial diving legislation, codes of practice, operating procedures and training policy in South Africa.