Heavy Lifting

Over the last twenty years or so, Halifax has hosted visits by several heavy lift platforms associated with the Sable Offshore Energy Project (SOEP). In fact, the second largest of these platforms in the world, Thialf (Halifax Shipping News has written a piece here) is sitting offshore of Halifax Harbour as I write this. Like Thialf, the modern generation of heavy lift platform, such as the Saipem 7000 (currently the world's third largest) is designed (among other things) to transport and place jackets and topsides for offshore oil and gas exploration and production platforms. I have yet to take any photos of Thialf due to the current COVID-19 quarantine, but I have previously written about the visits of Saipem 7000 (1998) and Heerema's Hermod (2003).

Saipem 7000 approaching the jetty in Woodside, with two SOEP jackets onshore to the left of the image.

Saipem 7000 now alongside and with the two jackets lifted onboard.

Shown here in Halifax in 2003, Hermod has since been scrapped. Heerema replaced her, and presumably her older sister Balder, with the new platforms Sleipnir and Thialf.

The history of floating crane platforms lifting heavy loads in Halifax Harbour goes back much further than the last twenty years, however, with (admittedly much smaller) heavy lifts occurring at least as far back as the Second World War. For use in their marine construction and salvage operations, the Foundation Company of Canada and their marine arm, Foundation Maritime, operated several such platforms bearing names such as Foundation Masson, Foundation Mersey, Foundation Scarboro, and Foundation Shipshaw (among others). The heaviest lifter of this bunch was Foundation Scarboro, with a lifting capacity of 230 tons on her shear legs.

One particular operation in 1945 or so involved lifting a number of small wooden tugboats onto a freighter to take them overseas. 

Foundation Scarboro lifting the tug CT65 onto a freighter, which appears to be the Fort Moose. 

"Under Tow" by Donal M. Baird recounts that twenty-two of these small 50-60 ton tugs of the Tanac-class were built of wood in small east coast boat yards, and many were shipped overseas as deckloads, with Britain and the Mediterranean as some of the destinations - one made it as far as Australia. Some remained in, or were repatriated to, Canada and served as late as the 1990s for companies such as Atlantic Towing.

In place of a name, the Tanacs initially carried the letters CT (for Canadian Tug) and a number. CT61 through CT65 were built on the South Shore of Nova Scotia by Industrial Shipping Co. Ltd. in Mahone Bay (61 through 63) and by Smith & Rhuland in Lunenburg (64 and 65). The Shipbuilding History website indicates that CT65 ended up in Italy under the name Tenax. 

Foundation Scarboro underway in Halifax with CT63 on the hook.

Lifting CT65.

Foundation Scarboro started off life with just the two shear legs fitted, but was later refitted to include a rotating derrick crane for more flexible but lighter lifting.

A close-up of the connection detail between the spreader bar and the tug.

A close-up of the connection detail between the spreader bar and the tug.

A close-up of the connection detail between the spreader bar and the tug.

A steel cable wrapped in padding passes down from the spreader bar and under the hull of the tug.

Presumably CT63 on board a freighter.

CT61 and another Tanac tug on-board their freighter. I'm not sure how many of these tugs a freighter could carry at once, but it was at least two at a time. In the top right of the image, just to the left of the bridge of the tug on the right, is what I assume is one of the old Halifax Harbour ferries.

CT64 onboard a freighter.

These tugs were build for the Ministry of War, who ultimately distributed them as needed. According to the Shipbuilding History website, a total of 265 of these tugs were built in Canada between approximately 1943 and 1946. Interestingly, as one of the hundreds of cargo vessels built in Canada during the war, Fort Moose was also built in Canada, at Montreal in 1943.

As it turns out, Foundation Maritime also operated a Tanac tug for a few years after the war, the Foundation Alice. She was built as CT262 at Smith & Rhuland in 1945, but was sold on from Foundation in 1948.

Foundation Alice.

Heerema's Hermod going for scrap

In 1999 and 2003, Halifax was visited by two large semi-submersible crane platforms in support of the Sable Offshore project, Saipem 7000 and Heerema's Hermod respectively. The former is the younger of the two (completed in 1987), has the heavier lift cranes (two 7,100 tonne models), and is still in service. Hermod, completed in 1979, has recently been sent for scrap.

Hermod, with her two cranes of 5,000 and 4,000 short ton capacities, was in port around April 12, 2003. She transported and installed the jacket(s) (support legs) for the Alma platform, in 67 metres of water depth. At the time, the daily rate to hire Hermod was reported to be in excess of $150,000 per day.

Hermod with McNab's Island in the background.

Hermod is the younger sister of Balder (completed 1978), which is still in service with Heerema.

Hermod, with two offshore supply vessels alongside.

Hermod surrounded by vessels in Halifax.

Hermod ready to be towed out. That's Fenwick Tower in the background under the two cranes.

To replace Hermod, Heerema is building the world's largest semi-submersible crane platform, the Sleipnir, with two 10,000 tonne cranes for a total capacity of 20,000 tonnes. 

As an aside, these four images were scanned from film negatives, and they aren't cleaned up as well as they could be. In addition, there was a spot of dust in the scanner that caused an overexposed line to appear in the center of each photo - best visible in the first image.