the opening of 1964 found "holland" at charleston, south carolina, making preparations for deployment to the polaris replenishment anchorage at rota, spain. she arrived in rota 1 april and relieved as the fleet submarine tender shortly thereafter. "holland" continued her service to the polaris submarines until relieved 4 november 1966. "holland" arrived at charleston 22 november. there, she tended submarines of the atlantic fleet into 1969. in march of that year she returned to rota for another tour of duty.