they gave control of the red sea task force to the US last year.
theyre the 12th largest navy in the world.
their navy us split into 2 fleets: Mediterranean and red sea.
they have 2000km of busy coastline to patrol.
the attacks are also happening beyond their coastline in the gulf of aden.
Djibouti has a military base of loads of other countries because uts also in their interests to protect the shipping
a weak navy and large coastline means they have limited ability to project naval power before considering protecting the gulf of aden or putting airstrikes into yemen.
oh, and Egypt has a track record of having an incompetent military, so there's that...