Red Crown

Red Crown – Amoco Indiana – Medusa Conquest – Southdown Conquest – Cemex Conquest – Conquest – St. Marys Conquest

1937-Present

Articulated Barge, Self-Unloading Cement Carrier; Paired with Tugboat Bradshaw McKee

St. Marys Conquest / Prentiss Brown, unloading at Milwaukee, WI, 1/7/2020. Isaac Pennock

Specs

Build Information

Year Built: 1937

Builder: Manitowoc Shipbuilding Co., Manitowoc, WI

Hull #292

Registry: US 236823

IMO #5015012

Laid Down: —

Launch Date: September 18, 1937

Commissioned: November 1, 1937

Paired Tugboats:

Construction

Red Crown was constructed in 1937 as a powered petroleum tanker by Manitowoc Shipbuilding Co. for Standard Oil Co. of Indiana. She was the last powered tanker constructed for Standard Oil Co. of Indiana.

In 1987, she was reconstructed as a self-unloading cement carrier barge. Her self-unloading equipment consists of a single hold conveyor and airslide system feeding a forward bucket elevator and airslide boom on deck.

Modifications

  • Converted into a self-unloading cement carrier barge, Bay Shipbuilding Corp., Sturgeon Bay, WI, 1987.

General Stats

As constructed as a self-propelled tanker

Length Overall: 465’03”

Length Between Perpendiculars: 454′

Breadth: 55′

Depth: 28′

Loaded Draft: —

Capacity: 5443 Gross Tons, 3363 Net Tons

Vessel Type: Liquid Cargo Tanker

Number of Cargo Tanks: —

Primary Operations: Petroleum Trades

Propellers: 1

Rudders: 1

After conversion to a self-unloading cement carrier barge, 1987.

Length Overall [Combined Tug & Barge]: 498′

Length Overall [Barge]: 437’06”

Breadth: 55′

Depth: 28′

Loaded Draft: 21′

Capacity: 8,500 Tons

Vessel Type: Self-Unloading Cement Carrier; Barge

Number of Cargo Holds: 8

Number of Hatches: —

Primary Operations: Cement Trade


Engineering Equipment [Removed, 1987]

Original

Engine

Engine Type: Triple-Expansion Steam Engine

Engine Manufacturer: Manitowoc Shipbuilding Co., Engine Department, Manitowoc, WI

Engine Model: —

Number of Engines: 1

Rated HP: 2600 IHP


Boiler

Boiler Type: Oil-Fired Scotch Boilers

Boiler Manufacturer: —

Boiler Size: —

Number of Boilers: 2


History

Lineage

Red Crown – 1937-1962

Owner: Standard Oil Co. of Indiana, Whiting, IN

Operator: Standard Oil Co.

Flag: United States

Home Port: Whiting, IN


Amoco Indiana – 1962-1987

Owner: American Oil Co. of Indiana, Whiting, IN

Operator: American Oil Co.

Flag: United States

Home Port: Whiting, IN


Medusa Conquest– 1987-1999

Owner: Cement Transit Co., Cleveland, OH [Medusa Portland Cement]

Operator: Cement Transit Co.

Flag: United States

Home Port: Cleveland, OH


Southdown Conquest– 1999-2000

Owner: Southdown, Inc., Houston, Texas

Operator: Southdown, Inc.

Flag: United States

Home Port: Cleveland, OH


Southdown Conquest – 2000-2003

Owner: Wilmington Trust, Wilmington, DE

Operator: HMC Ship Management, Lemont, IL [Hannah Marine Corp.] [Under charter to Cemex]

Flag: United States

Home Port: Cleveland, OH


Cemex Conquest – 2003-2005

Owner: Wilmington Trust, Wilmington, DE

Operator: HMC Ship Management, Lemont, IL [Hannah Marine Corp.] [Under charter to Cemex]

Flag: United States

Home Port: Cleveland, OH


St. Marys Conquest – 2005-2009

Owner: VCNA Prairie INC., Bridgeview, IL [St. Marys Cement]

Operator: HMC Ship Management, Lemont, IL [Hannah Marine Corp.]

Flag: United States

Home Port: Cleveland, OH


St. Marys Conquest– 2009-Present

Owner: VCNA Prairie INC., Bridgeview, IL [St. Marys Cement]

Operator: Port City Steamship Services, Muskegon, MI [Sand Products Corp.]

Flag: United States

Home Port: Cleveland, OH


Her Story

Manitowoc Shipbuilding Co.’s Hull #292 was christened Red Crown and launched into the waters of the Manitowoc River on September 18, 1937. Red Crown was constructed as a powered tanker for the Standard Oil Co. of Indiana, and was 465’03’’ long, 55’ wide, and 28’ long. She was originally powered by a shipyard-built Triple Expansion steam engine producing 2600 IHP, with a pair of oil-fired scotch boilers. Red Crown entered service on November 1, 1937, beginning her 50-year career of serving the Standard Oil and later, Amoco Oil, facilities across the Great Lakes with petroleum from her home facility in Whiting, IN.

In 1962, Standard Oil Co. of Indiana’s assets were sold to Amoco Oil of Indiana. Amoco Oil was formerly owned by Standard Oil, but was sold independent in 1911 when the Standard Oil Trust was broken up by the federal government. Red Crown was renamed Amoco Indiana, continuing to serve her normal trade routes.

Amoco Indiana was sold to Cement Transit Co., a subsidiary of Medusa Portland Cement, in 1986 for conversion to a self-unloading cement carrier barge. She was taken to Bay Shipbuilding in Sturgeon Bay, WI, for her reconstruction. Her engine room and accommodations were cut down and a notch for a push tug was fabricated on her stern. Her cargo holds were reconfigured for the carriage of the powdered cement, and a forward bucket elevator system leading to an airslide boom was installed. She entered service as the self-unloading cement barge Medusa Conquest in 1987. Hannah Marine Corp. was contracted to manage the barge, and she was paired with the tug Susan W. Hannah.

Medusa Cement was bought out by Southdown, Inc., in 1998, and Medusa Conquest was renamed Southdown Conquest in early 1999. Southdown was purchased by Mexico-based Cemex in 2000. The Southdown Conquest was sold to Wilmington Trust in order to keep her Jones Act-compliancy. She remained under management of Hannah Marine Corp., under a cargo contract charter to Cemex. She was renamed Cemex Conquest in 2003.

Cemex’s Great Lakes regional operations were purchased by Brazilian Cement firm Votorantum Cimentos in 2005. Ownership of the assets were placed under their subsidiary St. Marys Cement US. Cemex Conquest’s name was briefly shortened to Conquest, before being renamed St. Marys Conquest after her new charterer.

In early 2009, Hannah Marine Corp. went out of business. Port City Marine Services, a subsidiary of Sand Products Corp., took over management of the St. Marys Conquest, pairing her with their tug Prentiss Brown. The pair entered service together on March 8, 2009.

Bradshaw McKee switched places with the Prentiss Brown as the primary push tug for St. Marys Conquest in early 2015. Bradshaw McKee switched to another barge in January 2019, pushing the recently-completed Commander. Prentiss Brown rotated between pushing the barges St. Marys Challenger and St. Marys Conquest for the 2019 and 2020 seasons, depending on contract needs. Port City Marine chartered the tug Meredith Ashton from Ashton Marine of North Muskegon, MI, in August 2020, to push St. Marys Conquest. The Conquest operated with Meredith Ashton until the beginning of December. St. Marys Conquest continues to serve the powdered cement trade for St. Marys Cement, and was paired with the Bradshaw McKee prior to the 2021 season.


Compiled By Brendan Falkowski

Updated on February 17, 2021


Gallery


Sources

Berry, Sterling P. “Red Crown” Great Lakes Vessel History: Vessel Histories of Sterling P. Berry. N.d. Accessed 6 January 2021. https://www.greatlakesvesselhistory.com/histories-by-name/r/green-island  

Burdick, Rod. “St. Marys Conquest”. Great Lakes & Seaway Shipping Online. N.d. Accessed 6 January 2021. http://boatnerd.com/pictures/fleet/stmarysconquest.htm

Greenwood’s Guide to Great Lakes Shipping 2016, Harbor House Publishers, 2016. Pp. 7.5.

LeLievre, Roger. Know Your Ships 2020. Marine Publishing Company, 2020. Pp. 78.

Manse, Thomas J. Know Your Ships: 1959. Thomas J. Manse, 1959. Pp. 41.