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      SS John W. Brown B4611 Cargo Ship Vessel  

    SS John W. Brown B4611 Cargo Ship Vessel


    Liberty Ships such as the SS John W Brown were critical to Allied victory in World War 2.





     Updated: 7/11/2016; Authored By JR Potts, AUS 173d AB; Content ¬©www.MilitaryFactory.com


    The SS John W. Brown (B-4611) was a "Liberty" ship launched at the Bethlehem-Fairfield Shipyard in Baltimore, Maryland, on September 7, 1942 - the "Labor Day" national holiday being celebrated across the United States. Six Liberty ships were ultimately launched that day from various shipyards along the coast and all in support of American actions throughout World War 2. Despite her 1940s origins, the Brown has remained an operational vessel even today, albeit in limited cruises, and generally rests as a floating museum ship docked at Pier1, Baltimore Harbor, USA. The ship was named after labor union leader John W. Brown who helped to organize Local 4 - the Shipbuilding Workers of America.

    In 1936, with the rise of unrest throughout Europe, the United States Congress passed the Merchant Marine Act that allowed some 50 ships to be built each year. By 1940, the growing presence of the Empire of Japan across the Pacific led to an increase in the number limit of these vessels to 200 per year. The ships became a mixed bag of varying-sized cargo and tanker ships with the act requiring propulsion to be via steam turbines. However, few were ultimately built due to this advanced new engine technology and the lack of proper production facilities in America.

    By 1939, England was under siege by German U-boats prowling the Atlantic between the East Coast of America and the British Isles - some 600 vessels would be either sunk or damaged in this span of ocean - a critical artery of survival for the British people. As logistics have always won and lost wars, American President Roosevelt called for a new ship to be constructed to transport goods from America to her soldiers abroad and allied parties anywhere around the world; the concept was to simply build more ships than the enemy could sink. The new vessel design would be a larger copy of the "Hog Islander" cargo ship built for the same purpose during World War 1 decades before.

    The United States Maritime Commission modified the design of the current Lend-Lease vessels being built for England. The new ship was numbered "EC2-S-C1" and designed to coincide with American shipbuilding practices for both economical reasons and to reduce overall building time. The class was EC = "Emergency Cargo", 2 = length of 400 to 450 feet, S= steam engine propulsion and C1 = the design number. Henry J. Kaiser won the defense production contract and created a conglomerate group of companies named the "Six Companies" to be based along the West Coast. Coal-fed boilers would be replaced with engines fed from oil-fired boilers to help reduce the threat of onboard coal dust explosions. Hull construction included both riveting and welding - rivets were individually heated to a white hot state and then placed into pre-drilled holes between two plates and finally jack-hammered into place. Welding sections together was cheap and required less labor - though the main concern was that ships had never been welded together before and some questioned its resilience under the stress of loads in severe weather conditions common to the Atlantic.

    The construction workforce had to be trained from scratch as no one had previously attempted welded-hull ships to this point. As America entered the war after the events of Pearl Harbor in December of 1941, the shipbuilding yards began employing more women to replace the men who were enlisting in droves for the armed forces - in fact, World War 2 did more to integrate women into the workforce than any other previous American event. President Franklin D. Roosevelt finally saw a completed ship and told the press it looked like an "Ugly Duckling". The administration knew it needed to change a possibly similar public opinion of the vessels and designated September 27th, 1941 as the patriotic-minded "Liberty Fleet Day" - the first 14 such vessels were launched on that very day. The first ship completed was the SS Patrick Henry with President Roosevelt on hand to personally launch the ship. At the ceremony, FDR referred to Patrick Henry's 1775 speech in which he sternly stated the famous phrase "Give me liberty or give me death". Roosevelt said that this new class of ships would bring "liberty" to Europe so the name of "Liberty ship" stuck with the class from thereon.

    Kaiser knew how to build ships and having the Federal Government behind him allowed him to create a shipbuilding program like no other. This force consisted of seventeen shipyards located along the Atlantic, Pacific and Gulf coasts. He wanted the ships be turned out in fewer days than before and used incentives in the way of bonuses to set up healthy competition between the various shipyards. In the early days of the program, switching to welding each ship took about 230 days to complete one vessel. However, this average dropped to just 42 days when the work force was full trained and highly experienced. The record for shipbuilding output went to the SS Robert E. Peary which was launched after just four days and 15 1.5 hours after her keel was laid. The ships were built assembly-line style - ala the American automotive industry - using prefabricated sections to hasten construction. The expected cost of a Liberty ship was an estimated $2,000,000 though the actual cost at the various shipyards could range from $1,543,000 to $2,099,000 per ship. Based on the cost of the 10,000 ton cargo to be carried as compared to the cost of the ship itself, it was considered "paid for" if the ship delivered the goods on just her maiden voyage - if the ship made her return trip it was deemed a bonus. It is of note that each ship was built to have just a five-year life span.

    Some of the first Liberty ships suffered hull and deck cracks due to the limited training on the new welding practice - three of the 2,710 Liberty ships built broke in half and sank without warning and at the cost of some loss of life. The shipyards often used new inexperienced workers and this lack of training, combined with the new welding technique needing to produce large numbers of "emergency" ships, naturally created some faults in the construction process. Studies eventually showed the fractures were not only initiated by the rushed welding but also by some lower grades of steel being used that caused the metal to brittle. The ships in the North Atlantic were exposed to temperatures that could cause brittle failure resulting in a critical hull fracture. To complicate the issue, the ships were overloaded with cargo and, when the ship encountered severe storms at sea, it would place them at high risk. Structural reinforcements were applied to the Liberty ships to help stop the cracking problems and the next design, the "Victory ship", was designed as stronger and less susceptible to metal fatigue.


    SS John W. Brown B4611 Technical Specifications


    Service Year: 1942
    Type: Cargo Ship Vessel
    National Origin: United States
    Ship Class: EC2-S-C1-class (Liberty Ship)



    Structural (Crew Space, Dimensions and Weights)


    Complement (Crew): 87
    Length: 441.5 feet (134.57 meters)
    Beam (Width): 57 feet (17.37 meters)
    Draught (Height): 26.9 feet (8.20 meters)

    Surface Displacement: 10,920 tons

    Installed Power and Base Performance


    Engine(s): 1 x 3-cycle triple expansion reciprocating steam engine developing 2,500 horsepower to 1 x shaft.

    Surface Speed: 11 knots (13 mph)
    Operational Range: 19,986 nautical miles (23,000 miles, 37,015 km)

    Armament / Air Wing


    1 x 1.5" /38 cal main gun in stern mount
    1 x 1.3" /50 cal gun in bow mount
    2 x 1.3" /50 cal gun in stern mounts
    8 x 20mm Oerlikon anti-aircraft cannons in single mounts.

    Aircraft: None.

    Global Operators


    United States

    Ships-in-Class (2751)


    SS John W. Brown (B4611) plus 2,750 others.

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