Blar i Articles (FOR) på forfatter "Ådland, Roar Os"

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    • Are AIS-based trade volume estimates reliable? The case of crude oil exports 

      Ådland, Roar Os; Jia, Haiying; Strandenes, Siri Pettersen (Peer reviewed; Journal article, 2017)
      Most global trade statistics in the public domain refer to official customs data, which are not generally available on a micro (individual cargo) level. With the increasing availability and completeness of ship positioning ...

    • Does fuel efficiency pay? Empirical evidence from the drybulk timecharter market revisited 

      Ådland, Roar Os; Alger, Harrison Marshall; Banyte, Justina; Jia, Haiying (Journal article; Peer reviewed, 2017)
      The time charter market for ships represents a classical example of the principal-agent problem, where shipowners can opt to invest in energy efficient ships, yet any savings in fuel expenditures accrue to the charterers. ...

    • Hedging ship price risk using freight derivatives in the drybulk market 

      Ådland, Roar Os; Ameln, Haakon; Børnes, Eirik A. (Journal article; Peer reviewed, 2019)
      We show that a fixed-maturity time-weighted Forward Freight Agreement (FFA) portfolio should be used to proxy the expected future earnings of a vessel. We investigate the corresponding hedging efficiency when using a ...

    • Multivariate modeling and analysis of regional ocean freight rates 

      Ådland, Roar Os; Benth, Fred Espen; Koekebakker, Steen (Peer reviewed; Journal article, 2017)
      In this paper, we propose a new multivariate model for the dynamics of regional ocean freight rates. We show that a cointegrated system of regional spot freight rates can be decomposed into a common non-stationary market ...

    • Simulating physical basis risks in the Capesize freight market 

      Ådland, Roar Os; Jia, Haiying (Peer reviewed; Journal article, 2017)
      The purpose of this paper is to evaluate the characteristics of the time-varying differential between the Baltic global trip-charter average and simulated earnings from a fleet of Capesize vessels. We interpret the standard ...

    • The value of timecharter optionality in the drybulk market 

      Ådland, Roar Os; Prochazka, Vit (Peer reviewed; Journal article, 2020)
      Using an optimization model on a network with stochastic travel times we estimate the value of flexible worldwide redelivery compared to the more constrained Atlantic ocean option. We evaluate the value of the redelivery ...

    • When energy efficiency is secondary: The case of Offshore Support Vessels 

      Ådland, Roar Os; Cariou, Pierre; Wolff, Francois-Charles (Journal article; Peer reviewed, 2019)
      Offshore Support Vessels (OSVs) deal with time-sensitive logistics and sophisticated marine operations for high-value offshore oil and gas installations. We investigate whether this creates preferences that effectively ...