Bombing transportation targets in October-November 1941

The following targets were hit by British bombers:

Tripoli-attacked on 12 nights by 58 Wellingtons, some 4,000 lb bombs used
Naples-hit on 12 nights by 96 Wellingtons, some 4,000 lb bombs used
Brindisi was attacked once by 21 Wellingtons
Benghazi was hit by Wellingtons at night and SAAF Marylands in daytime
Derna-two attacks by 50 Wellingtons and 26 Blenheims at night, 11 Marylands in daytime

The harbour bombing proved to be pretty effective and caused disruptions to the Axis supply effort. This is based on the account in Vol.III of the Official History.