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 Post subject: Re: Speer's record load
Unread postPosted: September 12, 2017, 5:58 pm 
The Stewart J. Cort and Presque Isle could me modified to increase their mid-summer drafts to take advantage of recent increased water depths, but this has never been done.

For example. the Cort's draft could be increased to 32-feet 6-inches if deck strapping was installed. Similarly, the Presque Isle's draft could be increased to 30-feet 3-inches, again if deck strapping is installed.

I'm surprised the other BayShip thousand footers haven't broken any records yet (American Integrity, etc). Or are the other operators being more conservative?


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 Post subject: Re: Speer's record load
Unread postPosted: September 12, 2017, 1:22 pm 
Funny how CSL failed to mention the CSL Laurentian running aground at Nanticoke on August 30, 2017 with another of these record loads. Refloated that evening with an off-load into LLT's Mississaugi which turned back while upbound above Long Point to accommodate the request for empty vessel. Wonder if TSB even knew.


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 Post subject: Re: Speer's record load
Unread postPosted: September 12, 2017, 8:33 am 
With the high water levels it would have been interesting to see what types of tonnages would have been shipped from Escanaba this season.


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 Post subject: Re: Speer's record load
Unread postPosted: September 11, 2017, 7:00 pm 
Well the Gott has departed Two Harbors recently for another trip to Gary, Indiana. With new cargo records being broken at the Soo with the Speer in late July and the Gott last week, could we see be seeing yet another record with this next load by the Gott? Should be very interesting to see and find out what the tonnage is on this very next load they are taking to Gary. Might we top out at 74,000 tons on this load? I don't think that we are too far away from it! Time will tell.


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 Post subject: Re: Speer's record load
Unread postPosted: September 11, 2017, 5:32 pm 
Ohio Bob wrote:
With records being broken at the Soo, and water levels holding high, it lead me to think about the new lock proposed at the Soo. Are they proposing to match the Poe Lock's dimensions or would they consider increasing its depth over the sills?


The Poe's sills are not the limiting factor, the rock cut is.


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 Post subject: Re: Speer's record load
Unread postPosted: September 9, 2017, 9:04 pm 

Joined: March 15, 2010, 2:14 pm
Posts: 161
Location: Rossford, Ohio
With records being broken at the Soo, and water levels holding high, it lead me to think about the new lock proposed at the Soo. Are they proposing to match the Poe Lock's dimensions or would they consider increasing its depth over the sills?


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 Post subject: Re: Speer's record load
Unread postPosted: September 9, 2017, 6:26 am 
Guest wrote:
The controlling issues at the locks are the water over the sill getting into the locks, the water level in the pool below the locks, and the water level in rock cut. At mean low water datum the depth over the sill is 27'5". The depth of the lower pool is 26'11". Rock Cut is 26'11". So depending on water levels above MLWD you can determine how deep to load. Wind direction and atmospheric pressure affects the water levels, so the ships have to be very careful about how deep to load or be forced to anchor to wait for water levels to go up if you loaded too deep.


This is the secret to the success of shipping companys, how deep can you go in the St Marys! While this in the past was the secret of captains its often guided by head office now. At least one company used 27'6" at chart datum for above the lock and the rock cut. That leaves about 9 inches from what the surveys say. This week Lake Superior is 23" and Lake Huron 37" above chart datum. So the Speer at 29' 6" was inch deeper than that formula. Maybe took advantage of favorable winds and water fluctuations[/quote]


Boy I'd love to stick a go-pro to the keel of one or these boats and a light and watch just how close that is!


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 Post subject: Re: Speer's record load
Unread postPosted: September 8, 2017, 9:12 pm 
The Speer's record load was recently broken by the Gott. It hauled 73,940 short tons on September 6.


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 Post subject: Re: Speer's record load
Unread postPosted: September 6, 2017, 8:37 pm 
The controlling issues at the locks are the water over the sill getting into the locks, the water level in the pool below the locks, and the water level in rock cut. At mean low water datum the depth over the sill is 27'5". The depth of the lower pool is 26'11". Rock Cut is 26'11". So depending on water levels above MLWD you can determine how deep to load. Wind direction and atmospheric pressure affects the water levels, so the ships have to be very careful about how deep to load or be forced to anchor to wait for water levels to go up if you loaded too deep.[/quote]

This is the secret to the success of shipping companys, how deep can you go in the St Marys! While this in the past was the secret of captains its often guided by head office now. At least one company used 27'6" at chart datum for above the lock and the rock cut. That leaves about 9 inches from what the surveys say. This week Lake Superior is 23" and Lake Huron 37" above chart datum. So the Speer at 29' 6" was inch deeper than that formula. Maybe took advantage of favorable winds and water fluctuations


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 Post subject: Re: Speer's record load
Unread postPosted: September 6, 2017, 7:05 pm 
Guest wrote:
Guest wrote:
Guest wrote:
The draft would have been around 30 feet. She can haul 191.4 net tons per inch. I wish the USACE would have reported the draft besides the amount of iron ore carried on the Speer's downbound transit through the Poe Lock.

Draft at the Soo is limited by the water depth in the St. Mary's river and the depth of water over the sills at the Poe Lock.

The Poe Lock has a depth over the sills of 32 feet, but obviously the depth over the sills was deeper than that due to the greater volume of water in the river.

If the St. Marys river was ever deepened, it would be to the 30 foot depth.


draft was 29'6"


In the Fleet Gallery it says: "The Speer's 20 hatches feed 5 holds where she is capable of carrying 73,700 tons at her maximum mid-summer draft of 32 feet 1 inch."

If her cargo was 73,875 then wouldn't her draft be over 32 feet 1 inch ? How does this reconcile with the various limitations along the route (i.e depth over sill in the Poe, Rock Cut, etc..) ?


her record was NET tons. The 73,700 figure for her max load line is in GROSS tons.


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 Post subject: Re: Speer's record load
Unread postPosted: September 6, 2017, 5:43 pm 
The 73,700 tons listed on the Speer's description page is in gross tons, while the record cargo she carried in July was in short or net tons.


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 Post subject: Re: Speer's record load
Unread postPosted: September 6, 2017, 8:32 am 
Guest wrote:
Guest wrote:
The draft would have been around 30 feet. She can haul 191.4 net tons per inch. I wish the USACE would have reported the draft besides the amount of iron ore carried on the Speer's downbound transit through the Poe Lock.

Draft at the Soo is limited by the water depth in the St. Mary's river and the depth of water over the sills at the Poe Lock.

The Poe Lock has a depth over the sills of 32 feet, but obviously the depth over the sills was deeper than that due to the greater volume of water in the river.

If the St. Marys river was ever deepened, it would be to the 30 foot depth.


draft was 29'6"


In the Fleet Gallery it says: "The Speer's 20 hatches feed 5 holds where she is capable of carrying 73,700 tons at her maximum mid-summer draft of 32 feet 1 inch."

If her cargo was 73,875 then wouldn't her draft be over 32 feet 1 inch ? How does this reconcile with the various limitations along the route (i.e depth over sill in the Poe, Rock Cut, etc..) ?


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 Post subject: Re: Speer's record load
Unread postPosted: September 2, 2017, 8:06 am 

Joined: July 2, 2010, 1:36 pm
Posts: 563
CSL Laurentien's record load, as reported by the CSL World newsletter:

She loaded 34,337 metric tons of iron ore pellets at Superior, WI's BNSF Dock #5 on August 13, 2016 with a destination Nanticoke, ON.

(This is by far the largest cargo carried by a Canadian ship from Lake Superior to the lower lakes; up until just a few years ago a similar record cargo would've been in the 29,000 - 31,000 metric ton range.)

Draft was 28' 10.5" fwd, and 29' 02" aft.

Ship's officers monitored water level trends for weeks in advance, and closely watched weather conditions and fuel consumption as they carried out the voyage. They transited the St. Mary's River with water level at +32", and transited St. Clair and Detroit Rivers with water levels at +45".


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 Post subject: Re: Speer's record load
Unread postPosted: September 1, 2017, 7:55 pm 
Guest wrote:
The draft would have been around 30 feet. She can haul 191.4 net tons per inch. I wish the USACE would have reported the draft besides the amount of iron ore carried on the Speer's downbound transit through the Poe Lock.

Draft at the Soo is limited by the water depth in the St. Mary's river and the depth of water over the sills at the Poe Lock.

The Poe Lock has a depth over the sills of 32 feet, but obviously the depth over the sills was deeper than that due to the greater volume of water in the river.

If the St. Marys river was ever deepened, it would be to the 30 foot depth.


draft was 29'6"


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 Post subject: Re: Speer's record load
Unread postPosted: September 1, 2017, 5:28 pm 
The draft would have been around 30 feet. She can haul 191.4 net tons per inch. I wish the USACE would have reported the draft besides the amount of iron ore carried on the Speer's downbound transit through the Poe Lock.

Draft at the Soo is limited by the water depth in the St. Mary's river and the depth of water over the sills at the Poe Lock.

The Poe Lock has a depth over the sills of 32 feet, but obviously the depth over the sills was deeper than that due to the greater volume of water in the river.

If the St. Marys river was ever deepened, it would be to the 30 foot depth.


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