The Hennepin finally!!!

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jtivat

Contributor
Scuba Instructor
Divemaster
Messages
728
Reaction score
13
Location
Michigan, Grand Rapids
# of dives
500 - 999
The plan was to meet in South Haven at 4pm, load the boat and be over the wreck at 5:30pm. We knew we had to hook the wreck as there was no buoy on it yet. I was then going to go down with a wrench, chain and the end of a 600’ line to place a buoy on the bow of the wreck (supplied by the SWMUP). Followed by three other divers with a 20 minute planned BT and 68 minute RT at a depth of 230’.

Well as we all know things never go as planned! We all meet at 4pm and were over the wreck at 6pm. We were marking it with no problem right where it was supposed to be. However, hooking it was proving to be difficult if not imposable. The captain (Tim) and his first mate (Tim Jr.) tried and tried but to no avail. I have seen them hook many wrecks even hard one’s like the Ann Arbor No.5 with little or no problem. From looking at pictures and renderings of the Hennepin, I thought it would be a breeze. We tried for two and a half hours without so much as a tug on the hook. Tim then called a friend who dives for the MSRA and had been on the wreck many times, he mentioned they had problems in the past and suggested dropping the hook over the numbers and going down to tie in. We decided to give it a try but Tim also wanted to drop the main anchor. It was now about 8:45 and the sun was going down. After dropping the hook and the anchor we drifted and did not see the wreck on the depth finder. At this point we decided to call the dive. With the sun going down and the wreck not on the depth finder we thought it best to pack it in and go home. We pulled the hook and Tim went up front to pull the anchor. He then yelled that it would not come up and it felt like it was hooked on some rigging or a cable.

After verifying we were not drifting and that we were within 260’ of the numbers, three of us decided we would do the dive. It was the fourth diver’s first dive in months and he decided to forgo a 230’ night dive (probably I wise decision at this point). The new plan was for me to go first and shoot a bag in five minutes if the wreck was not there. I cut some ten minute tables just in case I had to bail with no wreck in site.

I hit the water at 9:06pm with the sun very low and the darkness creeping in. After 90’ it really got dark, at 170’ I was thinking I might see the A frame if that was what we snagged. I passed 170’ with a real spooking feeling as my 21watt Salvo was hitting nothing but black water and I had no idea what the bottom would bring. At 200’ the wreck just lit up, the HID now had a huge beautiful wreck to bounce off. I was at the Port side of the Hennepin just aft the cap stand looking at the anchor hooked on a steel cable at 211’. It was bobbing up and down and did not look very secure. I continued down and grabbed the anchor while holding down the inflator button on my 55lb OxyCheq Wing until the deck came back into view. I then hooked the anchor securely under some machinery just aft the cap stand.

Now it was time to enjoy the dive. I swam aft along the port side and the massive A Frame came into view. It looked very eerie back lit with just the tiny bit of sunlight that was making it down. I then passed over the smoke stack lying on the deck. Next I continued on passing the cabin, then crossing over the debris field at the stern. Now going forward along the starboard side I again swam past the A frame that was now completely black except for the light coming from my Salvo. At this point I was expecting to see Kirk and Jeff coming down the line but could see no lights. Being a little concerned by not seeing them, I swam over to the anchor line to make sure it was still there (it was). My BT was now 14 minutes and I decided to bail on my 15 minute tables. At my 100’ stop 20 minutes in, I was relieved to see two lights coming down the line. I gave Kirk a big thumbs up and a smile as he passed. I came out of the water at 48 minutes to a huge red moon coming over the horizon. It was one of the coolest and scariest dives I have ever done.

Jeff and Kirk did their planned 20 minute dive and came out of the water around 10:30 pm putting us back on the dock around 11:45 pm. All in all, it made for a very strange night with many highs and lows. This is an awesome wreck and I cannot wait to dive it again! Hopefully, this time with a buoy on it!
 
Awesome detail; I felt like I was there with ya while reading your post, especially when we passed the '170 mark and the light began to fade :D.

Jeff "Great lakes diver"
 
... into the technical side of diving. That reads like a thriller novel - great report.

Don't you love the way the HID's pierce the darkness like a light saber? I was just at a quarry yesterday testing my new 24W, and what a blast of photons.

When you dive it again, can you take some pictures? Or is it too deep for most housings?
 
Mine is good to 600 feet; so they say! I sure would hate to find out they were wrong.:(
 

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Mine is good to 600 feet; so they say! I sure would hate to find out they were wrong.:(


That is funny I just did a Video shoot in a pool for a local producer on Friday and he had the same housing. He thought it was only good to 75' but was not sure. It would be nice if it was actually 600' as I could get some video of the wreck.
 
Glad you had a good dive. Next time you may want to try a different approach. Many times when there is no mooring we drop a jug line on the wreck. We then suit up a diver and send him down the jug line with the mooring. We pack the complete mooring line and chain inside a plastic 5 gal jug. We fill the jug with water and it is easy to swim down with the system in one hand. The jug is hooked into the line and we try and make the jug end up at 35 ft.for our sub surface float. Once the diver hits the wreck he simply finds a suitible location to chain the wreck and shoots a little air in the jug to send the line to the surface. Once the line pops up I hook the boat to it. The diver never has to worry about the hook and still has plenty of time for a good dive. I have used this method many times and it works great. Being good with your depth finder and putting the jug right on target also helps. After making our dives we retrieve the jug line. Hooking a wreck can be difficult at times and I think this method eliminates this problem. We have used this method even in very rough conditions when hooking can get impossible. With the sub surface float at 35 ft. the mooring will last many years even if the surface line gets cut. Hopefully more wrecks will have a permanent mooring which makes it easier for all divers.
 
He thought it was only good to 75' but was not sure.

Well you made me go and look and it seems that I have made yet another mistake. I logged onto the site and it is 250 foot or 75 meters. I bought mine back in 2003 but the depth ratings are surely the same. If I find anything different on mine I will post the detials.

Here is the info from the Pro 6 flyer.
 

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Thanks for the great report! This is why I'm taking a trimix class.
 

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