Improvements in material, machinery, fuel and methods of construction, however, have enabled the designer to increase the speed of the average tramp from about 9 knots in 1910 to as much as 14-16 knots in 1963.
Ulungiseko kwizixhobo, koomatshini, ipetroli kunye nolunye ulwakhiwo nokuba lutheni, lunganikela ukuyila ngokunyusa isantya esikwiqondo elithile lwesingqi esisuka kumaqhina ayi9 ngo1910 ngokobuninzi obuyi14-16 yamaqhina ngo1963.