Heavy material used to make a ship steady or control the rising and falling of a vessel like a balloon
Ballast
Buoyant
To climb awkwardly
Clamber
To separate from
Detach
Causing uneasiness;strange or mysterious
Eerie
A length of six feet, used in measuring the depth of water
Fathom
To arouse or excite
Pique
To poke or prod, To examine closely, A through investigation
Probe
To be aware of
Realize
To split or break
Rupture
An object with all points on its surface equally distant from its center; a ball or globe
Sphere
To go underwater
Submerge
Seeming to go on for a long time; boring
Tedious
Ultimate
Completely unharmed
Unscathed