 The batteries have a claim to the title of the first ironclad warships but they were capable of only 4 knots ( 7 km / h ) under their own power : they operated under their own power at the Battle of Kinburn , but had to be towed for long range transit . They were also arguably marginal to the work of the navy . The brief success of the floating ironclad batteries convinced France to begin work on armored warships for their battlefleet . 
 The batteries <a href='got' title='1'><mark>have</mark></a> a claim to the title of the first ironclad warships but they <a href='uninflect' title='2'><mark>were</mark></a> capable of only 4 knots ( 7 km / h ) under their own power : they operated under their own power at the Battle of Kinburn , but had to be towed for long range transit . They <a href='uninflect' title='3'><mark>were</mark></a> also arguably marginal to the work of the navy . The brief success of the floating ironclad batteries convinced France to begin work on armored warships for their battlefleet . 
Da batteries got a claim to tdatitle of thdairst ironclad warships but they was capable of only 4 knots ( 7 km / h ) under their own power : they operated under their own power at the Battle of Kinburn , but had to be towed fir long range transit . They was also arguably marginal to the work of the navy . The brief success of the floating ironclad batteries convinced France to begin work on armored warships fir their battlefleet .