Hi Bruce,
Thanks for bringing that to our attention, I will update the info on our website. I have just spoken to ANEM ferries and indeed their site is down. Here’s the timetable for the slow ferry for the summer months:
From KOS (MASTICHARI)
SUNDAY, TUESDAY, WEDNESDAY
09:00 | 18:00
MONDAY, THURSDAY, FRIDAY, SATURDAY
09:00 | 14:45 | 18:00
From KALYMNOS
SUNDAY, TUESDAY, WEDNESDAY
07:00 | 17:00
MONDAY, THURSDAY, FRIDAY, SATURDAY
07:00 | 13:30 | 17:00
If in doubt you can always call ANEM on +30 22420 59124 or +30 22420 59027. The gentleman answering the phone is very helpful and told me he does speak English, so he is happy to provide climbers with ferry info.