capacities of up to tonnes. ships specializing in carrying very heavy loads, however, are invariably equipped with special derrick systems such as the stulken (fig ). these derrick systems are capable of lifting loads of up to tonnes. although crane motors may rely on pole-changing for speed variation...
capacities of up to tonnes. ships specializing in carrying very heavy loads, however, are invariably equipped with special derrick systems such as the stulken (fig ). these derrick systems are capable of lifting loads of up to tonnes. although crane motors may rely on pole-changing for speed variation...
capacities of up to tonnes. ships specializing in carrying very heavy loads, however, are invariably equipped with special derrick systems such as the stulken (fig ). these derrick systems are capable of lifting loads of up to tonnes. although crane motors may rely on pole-changing for speed variation...
capacities of up to tonnes. ships specializing in carrying very heavy loads, however, are invariably equipped with special derrick systems such as the stulken (fig ). these derrick systems are capable of lifting loads of up to tonnes. although crane motors may rely on pole-changing for speed variation...