These traditional low-drafted craft ply effortlessly and quietly through the water guided by their experienced pilots.
( ( ( These ( traditional ( low-drafted ( craft ply ) ) ) ) ( ( effortlessly and ) ( quietly ( through ( the water ) ) ) ) ) ( ( guided ( by ( their ( experienced pilots ) ) ) ) . ) )
(ROOT (S (NP (NP (DT These) (JJ traditional) (JJ low-drafted) (NN craft) (NN ply)) (UCP (ADVP (RB effortlessly)) (CC and) (PP (ADVP (RB quietly)) (IN through) (NP (DT the) (NN water))))) (VP (VBN guided) (PP (IN by) (NP (PRP$ their) (JJ experienced) (NNS pilots)))) (. .)))
The experienced pilots could not guide the low-drafted craft at all.  
( ( The ( experienced pilots ) ) ( ( ( could not ) ( ( guide ( the ( low-drafted craft ) ) ) ( at all ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ experienced) (NNS pilots)) (VP (MD could) (RB not) (VP (VB guide) (NP (DT the) (JJ low-drafted) (NN craft)) (ADVP (IN at) (DT all)))) (. .)))