Wednesday, August 26, 2009
Sunday, August 23, 2009
Visiting Bonaire
But what was the striking aspect of Bonaire is the wildlife. It first started when we were a few miles east of the island when a school of about 10 dolphins came to swim at our bow for over 15 minutes. Dolphins are not unusual but we didn’t see that many so far in our trip. Then once at Bonaire we had to use a mooring ball since anchoring is prohibited in order to protect the corals. In fact, we are mooring just on top of a reef standing on a slope where a nice sea turtle lives and we had the pleasure to swim with it. I slightly touched her 2 feet shell but she didn’t like it and quickly finished to take her breath and swam down. Later we saw a jellyfish that was about 15 inches in diameter swimming just a few feet from us! No need to say that we quickly got out of the way and of the water. The next day we saw two others about the same size. Thankfully the water is very clear here and we can see them coming from far away. Another day a large eagle ray came feeding just under the boat. It was different from the manta ray we saw in Grenada for it was a bit smaller, had a shorter tail and a characteristic face that Danielle describes as a “dog” face. Bonaire being so clean we can could just jump off the boat and snorkel right in front of the downtown and see lots of huge parrot fishes and also came face to face with a large moray that must have been at least two or three feet long. Again, we didn’t play fools and didn’t try to bother it. During our scooter ride we drove by a lake on the north side of the island where the tourist map shows a nesting location for the pink flamingos. Since the human race has already wiped out all interesting or special species of animals in all the areas we visited so far we thought that we would just find an empty place but to our great pleasure that wasn’t the case. Bonaire do not joke about the environment and this is probably why we could see about 10 flamingos feeding just about 100 feet from the small road and probably 50 others way further behind the large island sitting in the middle of the lagoon. This along with the wild parrots and many other very colorful birds was definitively the highlight of the day!
One day we looked at a suggested site on the tourist map described as a donkey sanctuary and is located just behind the airport. We looked at it and estimated this would be about 5 Km so we thought let’s practice for the Peru trip and let’s take our backpacks and walk over there. By the road we should be able to see the donkeys! Well, this was a bit different than that. For one it was more 8 Km and walking that distance under the scorching sun of south America with no shade along the way it was quite a walk but we brought enough water so we were able to manage all the way almost without crawling! Then once we got there we realized that this was a place where some people decided to take care of the local donkeys many of them taken from their owners who were mistreating them. They had a large piece of land where they would let their 400 donkeys wonder around in a peaceful environment and to finance their activity let the visitors drive by the land in their own car and see the animals. Of course since we walked we didn’t have a car but the lady nicely offered us to use her old jeep. She probably pitied us for walking almost to death and then not even being able to see the donkeys! We took the jeep and had a great time. As we were leaving the sanctuary a couple stop by us and offered us a ride back in town, which we gladly accepted.
Sunday, August 16, 2009
Problem with our SSB Radio, we need your help.
In the Venezuelan Islands.
Until now we visited three groups of islands, Los Testigos, La Blanquia and Los Roques. We stopped in the first group only to spend the night before moving on. The place was pretty but we wanted to keep going. At La Blanquia we stopped only for the day and left the same night toward Los Roques. Over there it is the real vacations. Its almost white sand beaches and its inhabited islands make of Los Roques a vacation place that the Venezuelans and other tourists take advantage plenty and we are no exceptions. Yesterday we stopped at an Island where only one other boat was anchored. In front of us laid a long sand beach and on our side, at about 300fts, was a large coral reef. We decided to take the day to relax while finishing the last shade cover that we are making to keep the cockpit cool. We first started in the morning by installing the rails on which the shade attaches and then we put on our masks and fins and swam to the beach about 450fts from the boat. Danielle thought that we do not exercise enough so she left at good speed and swam all the way to the beach with me dragging behind. Swimming 450fts even with fins is not obvious when we spend most of our time on a 40ft boat! I really miss my Tae Kwon Do classes! After taking some sand on the beach for our collection we swam to the coral reef and spent about an hour in the middle of multicolor fishes, which for the most part don’t seem to be bothered by our presence. Danielle would like to be able to touch the small silver fishes swimming in a school of a few thousands but they are not really the affectionate type and are very good at avoiding her hand in a synchronized dance. Once back on the boat we ate and then resume our work on the shade until we were again too hot and jumped in the water again. We returned to the different kind of parrot fishes, the school of purple fishes that I forgot the name and all the other ones as colorful as the next one. Those snorkeling sessions are really fun. A coral reef can easily host 20 to 50 different species of fish and shellfish not to mention the coral itself. It is easy to spend one or two hours swimming in the middle of this natural fish tank without getting bored. Finally we finished the shade just after a flamboyant red sunset and finished the day with a good bottle of wine.
If you like the technical stuff here’s a detailed description of the project in question. Before, we had four Siemens 75W solar panels for a total power of 300W and a conventional charge controller Trace-40C. We added 2 new 130W Kyocera solar panels and two 65W panels for a total additional power of 390W, which gives us a total nominal power of 690W. Our existing controller had a problem and I preferred to change it. Also I couldn’t connect the old panels in parallel with the new ones on the same unit so I needed two units in parallel, one for each group of panels. I chose the controller “Solar Boost 50” from Blue Sky, which is more expensive but also boosts the current by 20% by lowering the 17V voltage of the panels down to about 14V to the batteries. With the 20% boost this gives us the equivalent of 830W of solar panel with a conventional controller! I also changed the wires for the old panels in order to reduce the power dissipation in the old undersized wires. Even by bringing the controllers as close as possible to the batteries the run between the solar panels and the batteries is still over 60fts hence a total distance of 120fts since the current must go back through the negative wire. For this I used AWG-6 gauge, 7 strands zinc platted copper wire guarantying less than 3% of power loss. Practically, we get between 35A and 40A of charging current for most of the day. I haven’t measured the total charge we get but based on my estimate I’d say it is between 200 and 250 Amp-hour per day.