Author: Ayse Macknight

The cruise is nearing its end, having completed six weeks of travel. On July 18, around 8 am, the crew received a radio call from the Icelandic Coast Guard about a distress signal from a vessel with a broken mast and low fuel. The Marcus G. Langseth, being the closest ship, backtracked to assist. After about five hours, the sailboat was spotted. The crew deployed a small boat to deliver multiple cans of fuel to the stranded vessel, successfully enabling it to return home safely. It appears the boat had not been ready for the harsh weather, as their sails were shredded.

Continuing on, we passed Iceland on the west and entered the Arctic Circle, where the sun never sets. However, operations were suspended for several days due to poor weather. Upon resuming, we completed work at Station 6 east of Greenland, where we observed pilot whales and retrieved a core sample containing a piece of sponge. We then headed to Station 7, the final station.

We also experienced power disruptions due to engine issues; I believe the starboard main overheated and shut down, likely due to a procedure missed as we slowed down to deploy our last Argo float. Fortunately, the engineering team resolved the issue within a couple of hours.

Daylight is lasting a lot longer than I’ve ever experienced. Sunrise starts almost the moment I’m on shift (midnight). It’s hard to claim I’m on night shift when most of my work is still being done during the day. Overall, it seems like we’re all falling into a good rhythm. Usually, around 5 am, myself and the other tech on night duty start prepping the deck and the equipment for the day. Eddy, another MATE intern, writes us notes letting us know what work was done and what work we can do.

I finally had time to hang out with the science crew while they processed their samples. Before now, all I really got to see of their work was them taking the shuttles off the multicorer and into the vans (essentially, a shipping container kept at 33-36 degrees Fahrenheit) and then coming out with the mud in small bottles. I am really thankful that they took the time to show me their work. Inside the van, they have quite a bit of dedicated equipment that allows them to remove the mud from the shuttles without the mud being exposed to air.

I also had the joy of seeing an XBT (its Nicholas name is “Expendable Bathythermograph”) deployment. It is shaped a little like a toy rocket and essentially, it is a probe that measures the temperature as it falls through the water. There is a very thin copper wire connecting the probe to the equipment on the ship. When it reports that it has reached depth, we break the wire and leave the XBT in the ocean. It is something I’ve learned about in my studies but had heard they were not used most days as they are a bit wasteful, and there are other ways to get the same data.

Week Four 6/30-7/6

The team began the week traveling to station 03 at Orphan Knoll, 320 nautical miles off northern Newfoundland. Upon arrival on Tuesday, they successfully obtained 6 usable cores from the first cast. However, the sediment from the second cast was unsuitable for their project due to its coarse-grained. The team then moved to a new site, station 4, just east of Orphan Knoll. This location had deeper waters, resulting in longer days. On Wednesday and Thursday, they performed four casts per day. By Friday, they had collected enough mud after the third cast and deployed an Argo float. 

This week the weather took a noticeable change. The days were longer, colder and with frequent fog. We’re planning to head further north along the eastern coast of Greenland. I also spent a good chunk of time on our transit, relabeling all shuttles for the multicorer. I did this because many of the shuttles had different numbers from old attempts at labeling. And the inner plastic tube had no label. This made it difficult to track which shuttles were actually collecting usable cores. Additionally, I made a data sheet to record the sampling data that allowed us to see if the location on the multiorder had any impact on sample success. I was a bit nervous about showing the data sheet to the science crew because no one had actually asked me to do any of this but I had asked one of the senior techs if I could do this in my off time but I am happy to say that my efforts seem to be a appreciated! 

6/23-6/29

The days are really blending together now. I feel like I was just in New York a week ago but I also feel like I’ve been working on the boat for a year.  Overall, I’m still having a blast, and everyday I’m excited to be on shift. Deployments have been going well, but we are having difficulties with the samples. At one point we were all really really excited that 5 out of 8 samples were usable. The ocean conditions were not the best but we were also dealing with issues with the shuttles. There’s a lot of discussion on how we can improve them. We’ve been adding wooden blocks to the bottom to help the shuttles not penetrate the bottom too deeply. 

One of the days, the main block (the pulley that the winch wire is run through) on the A-frame was making an awful sound. Turns out the bolts used were too small and some had snapped. It was a really great example of how amazing the engineers on the ship are because they erected scaffolding and had it fixed within the hour. I wish I knew his last name but Sam, the Chief Engineer, has literally fixed every problem that comes up in record time. I am beyond amazed by him and his team. 

I also got to see an ARGO float! Which is something I’ve learned about in college and have used their data for projects. The deployment was pretty straight forward but it was amazing to have that hands-on experience with something i’ve only read about.