Here is plot of sea levels at Aveiro, Portugal using monthly data downloaded from PSMSL downloaded on 13 August 2014.
The line shows the linear trend.
The same plot with date extended to 2100 also showing a sea level rise of 3mm/year starting in 1993. This is what IPCC claim sea level rise jumped to - just after satellites were launched.
Does the 3mm/year rate claimed by IPCC seem credible to you?
Accelerating rates of sea level rise are supposed to be produced by rising global temperatures.
So if the rate of sea level rise is not accelerating - does that mean global temperatures are not rising?
And what does it mean if sea levels fall, as they are in some locations? For example: