The phrase "and steered by a" is correct and usable in written English.
It can be used in contexts where you are describing something that is guided or directed by a particular person or entity.
Example: "The project was complex, and steered by a team of experienced professionals, it achieved remarkable success."
Alternatives: "and guided by a" or "and directed by a".
During a lunchtime cruise along the Danube on a German-registered luxury boat and steered by a German captain, EU leaders quickly agreed to reassert their earlier pledge not to negotiate with the UK until the government invokes article 50.
He writes: "A paramilitary prison bureaucracy, led by able institutional managers and steered by a talented executive, may be the best administrative response to the problem of establishing and maintaining higher custody prisons in which inmates and staff lead a calm, peaceful and productive round of daily life".
Since its 1975 opening, Da Silvano has evolved from a trailblazing showcase of unadorned Tuscan cooking to something of a downtown Elaine's, beloved by celebrities, along with many regular folks, and steered by a proprietor, Silvano Marchetto, with his own luster.
See the wildlife up close with a ride on a traditional mokoro boat, a narrow dug-out canoe made from sausage or jackal berry trees and steered by a guide with a long wooden pole.
Rowing in eights (boats with eight oarsmen, each pulling one oar, and steered by a coxswain) began at Eton, where there is a record of the school owning three eights by 1811, and then progressed to Oxford.
With the support of Sir Frederick Hobday, editor of the Veterinary Journal, and steered by a select group of landed patricians, the fund raised donations to underwrite an ambitious research programme.
He will also be hamstrung by his own unreformed Socialist Party and steered by an electorate that has not yet heard the case for reform, least of all from him.
In his Santa Monica garage, Drake had designed and built a prototype meant to be ridden in a novel way — standing up — and steered by an inventive hand-held sail assembly.
The Invendo SC20 is a computer-assisted colonoscope, propelled by an "inverted sleeve" mechanism and steered by means of a reusable handheld device (8).
The craft, propelled solely by the current, are attached to cables and steered by oar.
This is all driven and steered by community feedback.
