14 December 2006

I-TASC Antarctic Expedition 2006-07

Yesterday we saw our first icebergs. They were spotted early in the morning but not by us. We didn’t see our first icebergs until about 1900. Then there were two large icebergs in the distance. After dinner, the I-TASC crew went to the bridge and spoke with the officer there. He showed us the radar where we could easily see many large pieces of ice. From the radar, we could look through the mist in the direction of the radar blips and search for the floating mountains.

I spoke with one of the officers and he was saying it’s not the big icebergs they are worried about. It’s the ‘growlers’ which cause problems. Growlers are smaller pieces of ice broken from icebergs, or the last remnants of a melting iceberg, which sit on or just below the surface. The officers are more concerned about seeing these so they can avoid hitting them. Big bergs can be easily seen and avoided but the little ones do not appear on the radar and must be spotted by eye. For this reason, there are constantly two people (not officers but paid crew) that sit on the bridge 24/7 (from yesterday) and look for ice. They have binoculars and if they see something they inform an officer.

The movement of the ice isn’t as easy to judge by eye as you might expect. The ship is constantly adjusting its course as the wind and swell push the boat slightly one way or another and the ship must constantly make adjustments for this. Hence nothing is static and points of reference are difficult to trust. Additionally, the movement of the ice can either be most influenced by the wind _or_ the current, depending on whether there is a┬álarger surface area above or below the surface. Hence, the ice moves erratically and watching the trails on the radar you can see the plotted paths of some bergs seem to move against the general flow, making navigation by radar something less like using mapquest and more like a game of frogger….

I watched one episode of this interestedly. I could see on the radar there was an iceberg straight ahead of us. I could also see some growlers in our path. The growlers are difficult to spot as the sea is a bit rough, so there are white caps of foam everywhere. The growlers can most easily be seen by looking for constant white spots in the sea ahead – to my New Zealand eye they are reminiscent of how reefs appear from a distance, with a constant rolling whiteness amongst the waves. The officer was quietly having a cup of tea and the spotters saw the ice and called him on a small handheld radio. As they called him it was amazing to witness how quickly the visibility can change at sea. In less than one second, the visibility was cut from about 2km to about 500 meters – it was the outlying cloud moving in like a quick fade, and less than half a minute later the visibility was again about 2km. Also, once you know what to look for, you start seeing ice everywhere. A course was then set to avoid the iceberg ahead and we all watched as the growlers ran harmlessly past. The ship always tries to avoid the bergs by a mile or so as the trailing path of the icebergs often has growlers that have broken off.

I talked with the officer and he was saying that they do hit the growlers. Although no one really gives a straight answer as to how dangerous this is – I have had two good replies from different people, one said “you will definitely know you have hit one”, and the other said, “well, you will at least spill your coffee.” The officer I spoke with had once worked on a boat where the captain made the officer in charge pay a 6 pack of beer for any growler they hit that woke him while he slept. Apparently, it was a good method for improving growler avoidance.

The officer also explained to me, that as we go further into the belt of ice, the ship gets steered like a car going through an obstacle course. The ship can be turned in about 2 or 3 ship lengths so it is quite quick to respond and in the worst case they simply stop the boat.

The sea got up a lot last night and it seems we were rolling in every direction simultaneously. Sometimes the rolls were very marked. I couldn’t help but ponder the effectiveness of spotting growlers by eye in rough seas at night. Consequently, I didn’t get much sleep. It’s 09.50, I will now get a coffee and have a shower, then I will go berg spotting.

…its now about 1500 and I spent a good 1.5 hours after lunch on the monkey deck watching icebergs. We are apparently traversing a belt of ice and then we move into the pack ice. There is now ice everywhere. At one point I saw a thin white line on our horizon (about 4km), I thought it might be the oncoming pack ice but it was just a large collection of growlers floating together. The boat altered course about 5 degrees to avoid it and then came back once we passed. Right now, I think we are just on 60 degrees south. This afternoon we are going to discuss some ideas First Born has about documentation and read some of the tech manuals.

12 December 2006

I-TASC Antarctica expedition 2006-07

Today is a smooth day on the seas. Last night got a bit rough with the ship taking some swells across its sides, causing the boat to roll quite a bit. The I-TASC crew are meeting in the ship’s library to start the tech planning. The Automatic Weather Station (AWS) looks really good, and the deployment plan looks also very interesting. None of us has experience with any of the electrical (solar), weather instruments, or HF radio components, but that’s just a challenge. Looks like we can do it. I am mostly concerned that we can get it installed in time. At least today First Born and Tom managed to get some of the sensors working with the weather data logging application.

Before lunch, I strolled up to the ‘monkey bridge’ which is at the very top of the ship and a good site for watching birds and looking for wildlife. Often there are albatross cruising behind and around the ship. I was hoping to catch a glimpse of some when I spied a pod of Orca cruising past about 300 metres from the boat. They were beautiful. I think the pack numbered about 8 or 9. Before that, in the morning, the birdwatchers that stay most of their time on the monkey bridge had seen a humpback whale.

Today we also entered the ‘ferocious 50s’ (50 degrees latitude). It’s getting colder and there is a soft haze reducing visibility to about 1 km. Tomorrow we might see some icebergs, according to the ship’s crew. There is a really large one ahead of us, apparently. I think I will spend most of the days on the monkey deck to see what I can spy.

I am feeling quite used to the ship now and also feeling quite ‘normal’ after several days of hazy sea-induced giddiness. Consequently, I miss being in touch with people off the boat. The BGAN terminal we use mainly for uploading the website updates gives some limited contact, but I will try and make some calls in the next days from the ship’s (expensive) satellite phone.

Before lunch, I also had a good talk with Tom about why we are going to Antarctica. Tom feels very strongly that by having a presence at the base we can influence some of the technological choices that the base may make. The AWS might be a good model (for example) for showing how solar panels could power other equipment at the base, rather than SANAE using diesel for generating electricity. I think Tom is in a good situation to put these ideas forward and to possibly link the contacts he has with the solar panel developers to the SANAE people. It was good, however, also to hear that it might be that I-TASC focuses more on this kind of role than on establishing a new base on the continent. This sounds more interesting to me than the idea of establishing a stand-alone base. Although Tom is ideally suited to the task of influencing the decision-making processes for tech strategy in the areas of renewable energy etc, I am not sure on how many other people from the proposed I-TASC crews could fulfill this role.

10 December 2006

I-TASC Antarctica expedition 2006-07 – aboard SA Agulhas icebreaker

Curiously, the sea is more like a cocoon than I had ever expected. It places a buffer between yourself and everything else. The slight giddiness from the motion brings a persistent soft haze over every sense… everything appears soft and sponge-like. The world is also a lot further away than just the hard miles that separate us from any mainland or communications mainline. We are in a suspended moment, like forever waiting at the terminal for your flight, but a strange waiting lounge where there is no anticipation of where we are going, no motivation to turn back.

Sleep comes easily, and the gentle rocking of the ship is soothing. We haven’t yet experienced really hard seas and they still might come but so far the sea has definitely been kind to us.

onboard-10decToday we slept late and worked only a little together as the I-TASC crew. It was a day off as it is Sunday. I passed the ship’s bar and TV lounge before lunch to see a small group of 7 or 8 people using the space as a makeshift church. During the afternoon, I read more about Shackleton’s amazing journey in his own words. Unbelievable. They seemed to survive for almost 18 months with little more than we would throw away in a week. I learned some Dutch a bit later then met the crew for dinner. After dinner, we met with Pierre and tried getting connected to the net via a BGAN terminal. We squatted on a high deck and tried to find the satellite in the dark, windy and cold night. We soon had a good connection and we were able to put up the Interpolar and I-TASC websites easily.

I have been thinking a bit about the trip and why we are doing this. I am not sure if it’s a good or bad idea. Before leaving, I read about Captain Cook’s journeys and his search for the great southern continent. Cook’s story is a sad one because it appears he had a lot of goodwill for those people he met as the first European on many Pacific lands. However, what followed was exploitation and loss. The one land he never reached, and coincidentally or consequently, was not to follow this route, was Antarctica. He never reached the continent although he got further south than needed if he had been at a different longitude. It seems to me there is good reason not to go to Antarctica as the first of many that might follow the I-TASC theme. Do ‘we’ really need to be there? What are the concrete gains by our adventures onto one of the last unspoiled areas on the planet?