During the year ended December 31, 2019, the Company purchased, from various counterparties, a barge fleeting operation in Lake Charles, Louisiana and nine inland tank barges from leasing companies for an aggregate of $17,991,000 in cash. The Company had been leasing the barges prior to the purchases.

On March 14, 2019, the Company completed the acquisition of the marine transportation fleet of Cenac Marine Services, LLC (“Cenac”) for $244,500,000 in cash. Cenac’s fleet consisted of 63 inland 30,000 barrel tank barges with approximately 1,833,000 barrels of capacity, 34 inland towboats and two offshore tugboats. Cenac transported petrochemicals, refined products and black oil, including crude oil, residual fuels, feedstocks and lubricants on the lower Mississippi River, its tributaries, and the Gulf Intracoastal Waterway for major oil companies and refiners. The average age of the inland tank barges was approximately five years and the inland towboats had an average age of approximately seven years.

The Company considers Cenac to be a natural extension of the current marine transportation segment, expanding the capabilities of the Company’s inland based marine transportation business and lowering the average age of its inland tank barge and towboat fleet.

The Company acquired intangible assets with an amortization period of two years and incurred long-term intangible liabilities related to unfavorable contracts with a weighted average amortization period of approximately 1.3 years. Acquisition related costs of $442,000, consisting primarily of legal and other professional fees, were expensed as incurred to selling, general and administrative expense in 2019.

On December 28, 2018, the Company purchased three inland tank barges from a leasing company for $3,120,000 in cash. The Company had been leasing the barges prior to the purchase.

On December 14, 2018, the Company purchased 27 inland tank barges with a barrel capacity of 306,000 barrels from CGBM 100, LLC for $28,500,000 in cash. The 27 tank barges transport petrochemicals and refined products on the Mississippi River System and the Gulf Intracoastal Waterway. The average age of the barges was eight years.

On November 30, 2018, the Company purchased an inland towboat from a leasing company for $3,050,000 in cash. The Company had been leasing the towboat prior to the purchase.

On May 10, 2018, the Company completed the purchase of Targa Resources Corp.’s (“Targa”) inland tank barge business from a subsidiary of Targa for $69,250,000 in cash. Targa’s inland tank barge fleet consisted of 16 pressure barges with a total capacity of 258,000 barrels, many of which were under multi-year contracts that the Company assumed from Targa. The 16 tank barges transport petrochemicals on the Mississippi River System and the Gulf Intracoastal Waterway. As a result of the acquisition, the Company recorded $16,116,000 of goodwill and $11,000,000 of intangibles with an average amortization period of 15 years. The Company expects all of the goodwill to be deductible for tax purposes.

On March 15, 2018, the Company purchased two inland pressure tank barges from a competitor for $10,400,000 in cash. The average age of the two tank barges was five years.

On February 14, 2018, the Company completed the acquisition of Higman Marine, Inc. (“Higman”) for $421,922,000 in cash. Higman’s fleet consisted of 163 inland tank barges with 4.8 million barrels of capacity, and 75 inland towboats, transporting petrochemicals, black oil, including crude oil and natural gas condensate, and refined petroleum products on the Mississippi River System and the Gulf Intracoastal Waterway. The average age of the inland tank barges was approximately seven years and the inland towboats had an average age of approximately eight years. Financing of the acquisition was through the issuance of the 2028 Notes (as defined in Note 8, Long-Term Debt) issued on February 12, 2018 in preparation for closing of the acquisition.

The Company considers Higman to be a natural extension of the current marine transportation segment, expanding the capabilities of the Company’s inland based marine transportation business and lowering the average age of its inland tank barge and towboat fleet.

As a result of the acquisition, the Company recorded $4,657,000 of goodwill of which the majority will be deductible for tax purposes. The Company also incurred $11,100,000 of intangible liabilities related to unfavorable contracts with a weighted average amortization period of approximately 4.9 years. Acquisition related costs of $3,464,000, consisting primarily of legal, audit and other professional fees plus other expenses, were expensed as incurred to selling, general and administrative expense in 2018.

On October 20, 2017, San Jac Marine, LLC (“San Jac”), a subsidiary of the Company, purchased certain assets of Sneed Shipbuilding, Inc. for $14,852,000 in cash including its Channelview, Texas shipyard. San Jac is a builder of marine vessels for both inland and offshore applications and a provider of repair and maintenance services. The Company intends to build towboats at the shipyard and use the facilities for routine maintenance.

On September 13, 2017, the Company completed the acquisition of substantially all of the assets of Stewart & Stevenson LLC (“S&S”), a global manufacturer and distributor of products and services for the oil and gas, marine, construction, power generation, transportation, mining and agricultural industries. The acquired business, which the Company operates through a newly formed subsidiary renamed Stewart & Stevenson LLC after the closing of the acquisition, was founded in 1902 and serves domestic and global markets with equipment, rental solutions, parts and service through a strategic network of sales and service centers in domestic and international locations.

The total value of the transaction was $758,213,000 consisting of cash consideration of $377,935,000, the assumption of $13,724,000 of debt and $366,554,000 through the issuance of 5,696,259 shares of Company common stock valued at $64.35 per share, the Company’s closing share price on September 13, 2017. The debt assumed consisted of $12,135,000 of term debt and $1,589,000 of short-term secured loans related to the Company’s South American operations. The term debt was paid off without penalty in the 2017 fourth quarter.

S&S is a distributor in certain geographic areas for Allison Transmission, MTU, Detroit Diesel, EMD Power Products (“EMD”), Deutz and several other manufacturers. S&S’ principal customers are oilfield service companies, oil and gas operators and producers, and companies in the marine, mining, power generation, on-highway and other commercial and industrial applications.

On July 10, 2017, the Company completed the purchase of certain inland marine assets from an undisclosed competitor for $68,000,000 in cash. The assets purchased consisted of nine specialty pressure tank barges, four 30,000 barrel tank barges and three 1320 horsepower inland towboats. The average age of the 13 inland tank barges was five years. The 13 tank barges transport petrochemicals and refined petroleum products on the Mississippi River System and the Gulf Intracoastal Waterway. As a result of the acquisition, the Company recorded $67,970,000 of property and $30,000 of intangibles with a weighted average amortization period of two years.

During July 2017, the Company purchased four inland tank barges for $1,450,000 as well as a barge fleeting and marine fueling operation business in Freeport, Texas for $3,900,000. The Company had been leasing the barges prior to the purchase.

The following unaudited pro forma results present consolidated information as if the S&S acquisition had been completed as of January 1, 2017. The pro forma results do not include any of the other acquisitions completed in 2017 through 2019 described above as the effect of these acquisitions would not be materially different from the Company’s actual results.

The pro forma results include the amortization associated with the acquired intangible assets, interest expense associated with the debt used to fund a portion of the acquisition, the impact of the additional shares issued in connection with the S&S acquisition, and the impact of certain fair value adjustments such as depreciation adjustments related to adjustments to property and equipment. The pro forma results do not include any cost savings or potential synergies related to the acquisition nor any integration costs. The pro forma results should not be considered indicative of the results of operations or financial position of the combined companies had the acquisitions had been consummated as of January 1, 2017 and are not necessarily indicative of results of future operations of the Company.

The following table sets forth the Company’s pro forma revenues and net earnings attributable to Kirby for the year ended December 31, 2017 (unaudited and in thousands):