No prob. Also, Science ships get a bonus to shield strength of up to 30% above the base amount due to their higher shield modifier, while shuttles/fighters get shield strength of only 40-60% of the base amount (when using Starship shields instead of the Shuttle ones that have a -S in their name). Cruisers get the base shield strength (no bonus/penalty unless specifically stated for that ship, such as the Odyssey's 15% bonus).
If you are currently flying an Escort it should already tell you the values that the shield will have on your current ship. Even in the inventory.
I had a friend who had a bugged Impulse Engine once. Made him fly like he had no engine at all. It could be a bug.
Each type, class and/of tier of ship have modifiers what affect the stats of the equipment that is slotted (equipped) on the ship. In broad terms, Escorts have smaller shield modifier, but higher speed and turn rate modifiers for engines. Cruisers have nominal shield modifiers and have reduced speed and turn rates foe engines. Science Vessels have superior shield modifier, and better movement rate and turn rate modifiers then a cruiser (although not as high as escort).