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Diving the Cape Peninsula and False Bay/Long Beach Simon's Town

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Diving the Cape Peninsula and False Bay : Long Beach Simon's Town
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Diving the Cape Peninsula and False Bay/Long Beach Simon's Town

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The dive site Long Beach (Simon's Town)is one of the most poular sites in the Simon's Town area on the False bay coast of the cape Peninsula, near Cape Town in the Western Cape province of South Africa. Information is provided which may assist in planning Recreational and Research Scuba diving at this site, and links to photographs of marine organisms that have been found there.

At first glance bland, but careful investigation will reveal interesting and varied life. A surprising variety of fish not commonly found in the region has been sighted here on odd occasions. The place to go when conditions are bad elsewhere. Very popular training site, and great for getting new equipment configurations sorted out

Name "Long Beach"

Named for the long stretch of sandy beach.
File:CT Dive site Long Beach Aerial view.jpg
Aerial view of the dive site at Long Beach with the compass navigation route superimposed.


S34°11.239’ E018°25.574’ (at the “Slipway” shown on the SAN chart). Behind the Simon's Town railway station.

This is in a Marine Protected Area (2009)


Easy shore access in most conditions. Beach entry to gently shelving sand bottom. Park at parking lot between Simon’s Town Station and beach. Turn east off the M4 into (road name) just to the south of the station.

Entry and exit at any point on the beach to the north of the fence at the southern end, which is the border to naval territory. the beach is uniformly shallow shelving sand without reef or other obstacles, and the surf will be trivial in all conditions when it is worth diving.


The parking lot is tarred and generally adequate. There are public toilets and changing rooms of variable condition (frequently vandalised, sporadically maintained, sometimes closed) and fresh water showers which have on occasion been disabled by sawing the handles off the taps.


the site is very well sheltered from Westerly winds and swell, and fairly well sheltered from South Easterlies. Almost always diveable, so popular as a training site and for night dives. The place to go when everywhere else is a mess and you really want to dive. The site is usually at it's best in winter when the wind is not from the east.

Conditions will probably be unsuitable during strong south easterly winds, which mostly occur in summer.


The bottom shelves gradually down from the shore to a depth of 18m at the Simon's Town Harbour mouth, 5m is reasonably close inshore, and about 9m at the maximum distance that the average diver is likely to swim.


The bottom is fine sand and mud, with small patches of coarse shelly sand


Flat sand bottom with occasional lumps of growth on loose rocks, wreckage and other artifacts. There is a pipeline perpendicular to the shoreline near the wall at the south end of the beach, which is visible in the aerial photo, and a wreck of a small steel barge just north of this pipeline. Further south is an obstruction shown on the chart, which is the wreckage of a tubular steel structure and some large concrete footings, possibly the remains of a jetty. Assorted artefacts are strewn randomly around the bay, as a result of centuries of mooring and occasional wreckings. Most are junk, but there will be objects of archaeological value which should not be disturbed. There is the bottom of a wooden yacht hull 220m north east of the barge bearing 057°magnetic. The bottom appears to be copper sheathed and most of the timber has rotted away. The wreck is about 11m long, 2m wide and 1m high, and the bow points towards 160° magnetic. Another wreck at S34°11.172' E018°25.652’ is the remains of twin screw wooden launch, Some bottom structure remains including keel bolts and stern tubes, There are also assorted mooring blocks and chains, some of them probably quite old, and usually heavily encrusted.

To the east is the wreck of a ferroconcrete yacht, which is about 170m bearing 109° magnetic from the seaward end of the pipeline.


The bay is home to the False Bay Yacht Club, so not all boats will give audible warning of their approach. Being hit by the keel of a yacht is to be avoided.

Skill level

No special skills required. The site is popular for training exercises and night dives, and is recommended as a site to test out new equipment configurations. It may be classed as confined water for some purposes.


The side produces occasional surprises. If you have a camera with you, you get to take the photos.


There are few landmarks, and though it is difficult to actually get lost, a compass is a convenience for keeping some idea of where you are. If you plan to go far from the beach it may be advisable to tow an SMB to let boats know where you are, or at least carry a DSMB in case you need to surface far offshore.

File:Porcupine fish at Long Beach.jpg
Occasionally visitors from warmer waters will find their way to Long Beach

Marine life

Quite a lot to see on the barge wreck. Little clumps of sessile growth based on the pipeline, red bait, other wreckage and debris, and loose rocks, mostly less than 0.5m diameter. There are extensive areas of sand with weed in the deeper water, some of it attached to the bottom, but a lot apparently loose. In some places there are beds of strap caulerpa, and where red-bait has rooted itself in the sand, little clumps of other organisms gather, including large numbers of Common feather stars. Large numbers of the Warty pleurobranch and Sand slug wander around, and at times there are quite a lot of sea hares. A wide variety of fish have been seen at this site, including several not normally found in the Western Cape. Seals are fairly common, and whales also occasionally come into the bay and have been seen during dives.

Suggested Routes

Most dives at this site include the barge, and many are more or less at random, or a circuit of some kind based on compass course, as the landmarks are fairly far apart.

1. Compass navigation trail: If you fancy your navigation skills, try this route (see also photo above):

1. Find the inshore section of pipeline that starts about 10m north of the fence at the south end of the beach. The first signs will be rectangular concrete blocks in a row parallel to the fence The pipeline starts fairly shallow and runs out approximately parallel to the fence.
2. Swim about 70m at 089° magnetic out to the east end of the inner pipeline. This is at the end of a section of pipe and there are no blocks beyond this point until the outer section.
3. Swim 11m at 015° magnetic to the south end of the wreckage of a small steel barge. (22m x 4m x 2m?)
4. Swim about 22m to the north end of the barge
5. Swim 18m at 075° magnetic to an encrusted lump. (about 1m diameter)
6. Swim 22m at 024° magnetic to a mooring block (200 litre barrel full of concrete).
7. Swim 27m at 071° magnetic to the north end of a piece of heavy encrusted mooring chain with an encrusted lump at the end. (lump 1m high, chain about 25m long)
8. Swim 42m at 039° magnetic to the wreckage of a small wooden twin-screw launch. (10m x 4m)
9. Swim 30m at 033° magnetic to a cast iron winch drum (0.6m high and wide). This object is not easily recognised as it is heavily encrusted, but it is the only object of this sort of size in this vicinity.
10. Swim 96m at 079° magnetic to a the wreckage of a small wooden yacht (about 10m x 2m x 1m)
11. (optional visit to Jeff’s Box or skip to 13) Swim 72 m at 043° magnetic to a large rectangular steel box with a couple of holes in it. It is about 3.5m high, about 4m long and 2.5m wide and is unmistakeable.
12. Return to the wooden yacht wreck 72m at 223° magnetic.
13. Swim 168m at 224° magnetic to the kink near the middle of a long chunk of very heavy mooring chain (about 44m long). The chain lies roughly east-west and is hard to miss. The kink points to the south.
14. Swim 24m at 200° magnetic to the east end of the outer section of pipeline
15. Swim 41m at 210° magnetic to east end of a concrete and steel pipe structure (about 6m x 2m x 2m?)
16. Swim 9m at 268° magnetic to a large stepped square concrete Foundation block (2m x 2m x 1m). Magnetic influence of the steel structure is significant, but by swimming anticlockwise around the structure you should see the block off to your right.
17. Swim 43m at 328° magnetic to the west end of outer pipeline section
18. Swim 11m at 275° magnetic to east end of inner pipeline section
19. Swim 71m along pipeline to west end of inner section and surface
Total distance 705m point to point excluding the excursion to Jeff’s Box. (563m from east end of inner pipeline back to east end of inner pipeline – Time yourself on this circuit)
Maximum depth about 9m at the yacht wreck (10m at Jeff’s box). Average depth of water probably about 6m
The positions of the landmarks have been surveyed by GPS. Accuracy should be within a few metres

2. A somewhat shorter route for the less experienced or those with less air available:

Legs 1 to 8 as for the long route will take you to the launch wreck.
9. Swim 77m at 184° magnetic to the kink near the middle of a long chunk of very heavy mooring chain (about 44m long). This is the same chain as in point 11 above.
10. Swim 24m at 200° magnetic to the east end of the outer section of pipeline
11. Swim 52m at 271° magnetic to the west end of outer pipeline section
12. Swim 11m at 275° magnetic to east end of inner pipeline section
13. Swim 71m at 269° magnetic along pipeline to west end of inner section and surface
Total distance 447m point to point

3. Ferro concrete yacht wreck. Swim to the seaward end of the pipeline, then 170m bearing 109° magnetic. Return on reciprocal bearing, which will take you all the way to the beach.

Calibration leg for distance: To calibrate kick counts swim along the outer pipeline which is 52m long and record the number of kicks required. Swim back and record the number of kicks for the return leg. This should be the same or very similar. Add the two and divide by total distance of 104m to get your distance per kick count. This will vary depending on your speed, trim, posture, equipment, and style of finning, so try to be consistent and fin at a reasonable speed that you will be able to maintain for the longest leg which is about 170m. If in doubt, or for your own information, try swimming the calibration leg at different speeds to see what difference it makes. Do not expect great precision, but you should be able to get consistency within 10% with a little practice. To find the outer pipeline section, start as for the navigation route and find the inner pipeline section and follow it to the west end. Swim about 11m at 095° magnetic to the start of the outer section of pipeline. If you have no idea of your kick distance, work on about one kick count of both feet to the metre and at the end of 11 counts the outer pipeline should be visible. If not, continue for another 5 counts and look again.


Views of the site from the shore.

CT dive site Long Beach Simon's Town.jpg
The “Slip” at Long Beach, covered by sand, is just beyond the gap in the wall, with Simon’s Town Naval Dockyard in the background.

Back to Dive sites of the Cape Peninsula and False Bay

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